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Silicone is one of the most valued materials in industrial gasket and seal engineering due to its exceptional balance of flexibility, thermal stability, and chemical resistance. When a company evaluates sealing options for demanding applications, understanding when silicone provides clear advantages over traditional elastomers or rigid plastic materials is crucial. In this context, silicone extrusion profiles offer a technical solution that meets sophisticated performance, durability, and extreme environment compatibility requirements. Unlike other rubber formulations or thermoplastics that may lose properties under temperature or chemical stress, silicone gaskets maintain structural and functional integrity. Therefore, choosing the right material should not be based solely on cost but on understanding operational demands and the application environment. ISOGOM, with decades of experience in silicone gasket extrusion, advises industries ranging from energy to automotive on when this material adds real value. How Thermal Range Influences Silicone Gasket Selection Operating temperature range is a decisive factor for selecting a technical sealing material. Silicone gaskets excel where service temperatures far exceed what neoprene or EPDM can withstand. In severe industrial applications, silicone maintains mechanical properties from cryogenic conditions to sustained heat environments without degradation. This thermal range offers direct advantages in applications where dimensional stability is critical, such as electrical equipment exposed to heating and cooling cycles, or chemical process equipment operating at high temperatures continuously. Thanks to this property, ISOGOM has positioned itself as a silicone gasket extrusion company capable of developing profiles that meet strict temperature specifications without compromising long-term sealing. Additionally, silicone exhibits a low thermal hardening rate compared to conventional elastomers. This means that even after repeated exposure to extreme temperatures, gaskets continue functioning without cracking or losing elasticity, resulting in lower maintenance needs and prolonged service life. Aging and Durability: Advantages Over Other Materials Silicone also demonstrates superiority in aging under aggressive environmental conditions. It has excellent resistance to ozone, UV radiation, and oxidation—factors that accelerate degradation in natural or synthetic rubber. For applications exposed to outdoor conditions or continuous wear, silicone gaskets provide superior durability, directly reducing operational costs over the system’s life cycle. Its resistance to chemical aging is notable as well. In environments with oxidizing agents or high humidity, other materials may crack or lose elasticity over time. Silicone’s inherent properties maintain mechanical performance without swelling or significant degradation, keeping seals compliant with their specifications even after years of continuous service. This is why clients in food, pharmaceutical, or medical device sectors, which demand high hygiene and durability, choose ISOGOM as a manufacturer of specialized silicone gaskets. Maintaining functional characteristics over time ensures operational reliability, minimizing downtime and unplanned maintenance. Chemical Behavior: Resistance Where Others Fail The interaction between sealing material and chemical agents in the working environment is another critical selection parameter. Silicone shows especially favorable performance against corrosive or aggressive agents, resisting weak acids, bases, organic compounds, and industrial vapors. This chemical resilience results in lower substance absorption, preserving the seal’s mechanical properties and preventing deformation or premature failure. In applications involving contact with fuels, lubricants, or specific industrial fluids, extruded silicone profiles ensure uniform performance without losing integrity. For example, in transportation or heavy machinery industries, silicone gaskets maintain sealing even under prolonged exposure to hydrocarbons or aggressive chemical solutions. This feature is particularly valuable when reliability and operational safety are non-negotiable. ISOGOM has technical capabilities to formulate silicone compounds resistant to adverse chemical conditions, allowing the design of customized solutions that guarantee optimal sealing without compromising the integral system’s functionality. Typical Applications Where Silicone Offers Technical Advantage The unique thermal, aging, and chemical resistance properties of silicone make it ideal for a wide range of industrial applications. In HVAC and refrigeration systems, silicone gaskets ensure sealing across broad temperature ranges, enduring cold and heat cycles without deterioration. In electronics, silicone’s dielectric properties make it indispensable for gaskets requiring both insulation and sealing. In medical and precision devices, where biocompatibility and long-term stability are essential, silicone gaskets meet regulatory specifications without compromising function or safety. Similarly, in chemical processing equipment, silicone’s chemical robustness reduces the need for frequent replacements, extending component life and reducing unplanned downtime. For all these reasons, when design requirements demand high-performance technical sealing, silicone outperforms other elastomers or conventional polymers. Why Choose Silicone Gasket Extrusion Solutions with ISOGOM As an established supplier, ISOGOM is a benchmark in silicone gasket extrusion, combining technical precision, industrial quality, and adaptability to each client’s needs. Its approach goes beyond standard profile production, encompassing engineering of sealing solutions that meet thermal, chemical, and durability specifications specific to each application. Working with a silicone gasket extrusion company like ISOGOM means receiving guidance from design, compound selection, and material formulation through to the production of profiles meeting tight tolerances and strict industrial standards. This technical approach, supported by quality certifications and continuous control processes, ensures gaskets not only meet performance requirements but provide long-term operational reliability. ISOGOM combines extrusion expertise with deep understanding of industries such as automotive, urban equipment, industrial machinery, and food processing. Its gasket extrusion solutions result from decades of applied innovation and response to real engineering challenges. When Silicone Makes the Difference Choosing silicone as a technical sealing material ceases to be a preference and becomes a strategic decision when temperature, aging, chemical resistance, and dimensional stability requirements exceed other materials’ capabilities. Its extended thermal range, behavior against aggressive agents, and longevity in continuous service make it ideal for demanding industrial applications. If your project requires gaskets meeting these criteria and more, selecting a provider experienced in silicone gasket extrusion will make a tangible difference. At ISOGOM, you will find a technical partner capable of advising, proposing customized solutions, and supplying profiles that enhance system reliability and lifespan. Contact ISOGOM and discover how our advanced silicone gasket extrusion solutions can optimize your equipment performance. We are ready to support you from concept to delivery of sealed profiles meeting the most stringent standards.

In bi/tri-extrusion, everything works fine… until a bonding line appears that moves, opens, or becomes visible on the surface. This “seam” between layers is the critical interface: if it is not properly controlled, it results in rejected meters, complaints, and significant loss of time. In this article, we look at how polymer processing affects these interfaces, which variables need to be monitored, and what an experienced gasket extrusion company like ISOGOM can contribute. What exactly is a critical interface in bi/tri-extrusion? When we co-extrude two or three materials, their flows meet inside the die and generate an internal bonding line. This interface will be: • Invisible and stable, if compatibility and process conditions are correct.• Visible or unstable, if there are viscosity differences, internal stresses, or poor channel geometry. Typical problems when the interface gets out of control include: • Visible marks or “shadows” on the visible surface.• Micro-cracks or delamination between layers.• Loss of sealing performance in gasket extrusion solutions where the sealing layer does not work as intended. In technical profiles (closures, automotive, transport…), these small defects translate into noise, leaks, or premature aging. Material compatibility: the first filter Before talking about temperatures and speeds, we need to talk about pairing: which polymers are going to “touch” each other? In bi/tri-extrusion of rigid profiles and flexible gaskets, it is advisable to review: In other words, if polymer processing is not approached from the material–process pairing, the interface will be a source of problems from the very first meter. For more information on extruded rubber and industrial rubber seals. Die design and process parameters Once materials are selected, the next level of control lies in tooling design and the process recipe: • Channel geometry: avoid abrupt section changes that create dead zones, recirculation, or excessive shear at the bonding line.• Flow balancing: small flow rate differences between extruders can shift the interface and make it “serpentine”.• Temperature profile: a material that is too cold or too hot at the meeting point will create stresses and potential micro-cracks.• Line speed and calibration: if haul-off is not properly synchronized, the interface may stretch or thin out, losing continuity. At ISOGOM, these adjustments are part of the daily work in our continuous polymer processing operations, especially when dealing with profiles combining multiple hardness levels or rubber/thermoplastic combinations for closures and industrial applications. This applies both to complex extrusion profiles and to high-performance extruded rubber seal designs. Why rely on a specialized gasket extrusion company? Not all lines and not all equipment are prepared to handle complex bi/tri-extrusion. Working with a specialized gasket extrusion company provides: • Product and process engineering support from geometry design through industrialization.• Fine-tuning of materials to achieve clean bonding without compromising functionality (sealing, tolerance absorption, aging resistance…).• The ability to test polymer variants, hardness levels, and layer configurations until a robust process window is achieved. At ISOGOM, we combine this experience across multiple sectors (construction, industry, transport…) with custom tooling and in-line dimensional control to ensure stable bonding, even in long and demanding production runs of industrial rubber seals and silicone extrusion profiles. Next step: taking your design to continuous production If you are in the design phase of a bi/tri-extruded profile and are concerned about bonding line stability, now is the ideal time to talk: The earlier the interface is considered, the fewer surprises there will be on the shop floor. Would you like to discuss your project with the ISOGOM technical team? You can get in touch with us.

When we talk about gaskets for industrial ovens, the key question is not only “can it withstand the temperature?”, but “how long will it last without downtime or leaks?”. Choosing between silicone and EPDM directly impacts service life, maintenance costs, and production line continuity. Let’s look, in practical terms, at when each material is the right choice and how we work with them at ISOGOM within our industrial rubber seals design process. What do we require from a gasket in an industrial oven? In a process oven (food, coating, curing, etc.), the gasket usually operates under: • High temperatures and continuous thermal cycles.• Water vapor, CIP cleaning, or frequent washdowns.• Constant compression in doors, covers, or conveyor pass-throughs. That’s why from good industrial rubber seals we require: • Dimensional stability (so it does not “flatten” after a few months).• Resistance to heat and, where applicable, to steam and detergents.• Easy replacement and good adjustment repeatability. This is where the real differences between silicone and EPDM come into play. Silicone: the solution for extreme heat and sanitary visibility Silicone is the go-to material when the oven operates in the 200–250 °C range or even higher, and when strict hygienic requirements apply. Many high-temperature silicone sealing compounds can withstand peaks of up to 300 °C depending on formulation and thickness. Typical advantages for gaskets for industrial ovens include: • Wide thermal range, with good performance even at low temperatures.• Excellent flexibility and elastic recovery, ideal for doors that open and close frequently.• Availability of food-grade and detectable qualities for process industries. The use of silicone extrusion profiles makes it possible to manufacture custom profiles for chambers, tunnel ovens, or special doors. The less favorable point? Raw material cost is higher than standard EPDM, and in very aggressive steam environments, careful dimensioning may be required. EPDM: specialist in hot water and steam EPDM is a synthetic rubber widely used in seals for installations with hot water and steam, thanks to its good resistance to these media and to weathering. In ovens where: • Operating temperature is closer to 120–150 °C,• There is significant steam exposure and frequent wash cycles,• And cost per meter is a sensitive factor, EPDM can be a very balanced alternative to silicone, often offering a better cost-to-performance ratio in many technical applications. However, attention must be paid to: For more details on performance differences, this comparative guide EPDM vs silicone clearly outlines the pros, cons, and operating ranges of each material. Quick comparison: which one extends service life the most? Summarized from a service continuity perspective for gaskets for industrial ovens: • Extreme temperature and dry environment: silicone usually wins, especially above 200 °C.• Moderate temperature + steam / hot water: EPDM offers excellent steam and aging resistance at a lower cost.• Food or sanitary environments: silicone, particularly in specific food-contact grades.• Maintenance shutdowns: a properly dimensioned extruded rubber seal in the right material reduces changes due to fatigue, cracking, or premature hardening. In oven and heating applications, it is also useful to see how certain high-temperature silicone sealants are specifically used for oven doors and heating systems. Where does ISOGOM fit into this decision? Theory helps, but every oven is different. As plastic extrusion companies and gasket manufacturers, at ISOGOM we don’t just talk about materials: we analyze temperature curves, opening cycles, presence of steam or chemicals, and the type of metal support. With this information: The goal is simple: to ensure your gaskets for industrial ovens operate for as long as possible without failure, with predictable maintenance planning and no surprises. If you are considering redesigning your seals or changing material, the ideal time to review the silicone vs EPDM decision is before the next line shutdown. At ISOGOM, we can help you do it using real process data and a tailored solution.

In the food, beverage, pharmaceutical, and biotechnology industries, maintaining strict hygiene is non-negotiable. Equipment must be routinely sanitized using CIP (Cleaning-In-Place) or SIP (Sterilization-In-Place) protocols. These processes involve circulating aggressive chemicals (strong acids, alkalis, peroxides) and/or high-temperature steam. For any piece of processing equipment (tanks, pipes, valves, pumps) the seals are the weak point. A failure in the rubber extrusion seal due to chemical attack or heat degradation can lead to contamination, process downtime, and costly compliance issues. Choosing the right elastomer for these demanding environments is a technical challenge where material expertise is critical. The Challenges of CIP/SIP on Extrusion Seals CIP/SIP cleaning subjects the extrusion seal to extreme conditions: A standard industrial rubber seal will quickly fail under these conditions. Material Selection for Hygienic Rubber Seal Extrusion Profiles The ideal material for rubber seal extrusion profiles in hygienic applications must offer both excellent chemical and thermal resistance. The three primary materials used are EPDM, FKM, and Silicone: Material Key Strengths Limitations in CIP/SIP Best Application EPDM (Peroxide-Cured) Excellent hot water and steam resistance. Good chemical resistance to polar solvents and acids. Poor resistance to oils, greases, and non-polar solvents. Food/beverage lines, steam sterilization. FKM (Fluoroelastomer) Superior chemical resistance (acids, bases, oils, solvents). High-temperature performance. Poor resistance to hot water/steam over long periods; high cost. Chemical processing, high-fat food products. Silicone (VMQ) Excellent high/low-temperature stability. Very low compression set. Poor resistance to concentrated steam and strong acids/bases; low mechanical strength. Low-pressure applications, general sealing where high temperature is key. For most high-pressure, steam-based CIP/SIP systems, peroxide-cured EPDM is often the first choice due to its excellent resistance to steam and common cleaning agents, provided the process does not involve high levels of animal fats or oils. Hygienic Design and Compliance Beyond the material, the design of the extruded rubber seal must facilitate cleaning: ISOGOM: Your Partner in Hygienic Sealing As experts in rubber extrusion seal manufacturing, ISOGOM understands the critical nature of CIP/SIP compliance. We specialize in providing rubber seal extrusion profiles that meet the stringent requirements of hygienic systems: Do you need a reliable, compliant rubber extrusion seal for your hygienic equipment?Contact ISOGOM today for a quote and consultation on finding the ideal extrusion seal material and profile for your demanding CIP/SIP application.

In modern construction, energy efficiency is paramount. For aluminium window, door, and facade systems, this translates directly to the effectiveness of the thermal break. An aluminium profile, while structurally robust, is highly conductive, creating a “thermal bridge” that allows heat to escape in winter and enter in summer, leading to significant energy loss and internal condensation. A high-performance system must incorporate a thermal break (a non-metallic barrier inserted between the inner and outer parts of the aluminium profile) to disrupt this path of heat flow. Here is a look at the essential components and seals an expert aluminium extrusion profile supplier provides to ensure maximum thermal performance. More info here about aluminium windows. The Core Component: Polyamide Profiles The most common material for the thermal break component itself is Polyamide (PA) reinforced with glass fibers. Polyamide offers a low thermal conductivity, effectively isolating the interior and exterior profile shells. The Role of Seals and Gaskets in Thermal Performance While the polyamide profile stops conduction, the seals stop convection and air leakage. Without proper sealing, air can circulate through the chambers of the extrusion profiles, nullifying the thermal break’s effect. The Impact of Profile Connector Design In complex assemblies, such as corners or mullion/transom junctions, the thermal continuity must be maintained. This is where the design of the profile connector and ancillary seals becomes crucial. Why Choose ISOGOM for Thermal Break Components and Seals? As a specialized aluminium extrusion profile supplier (focusing on the sealing components), ISOGOM ensures that your thermal breaking system achieves its full potential. We provide high-quality sealing solutions that complement the Polyamide strips: Contact us to discuss your thermal break project. We will supply the sealing components and expertise needed to achieve superior energy ratings and condensation control in your aluminium systems.

When you design or install a curtain wall, you know there is no room for error: any air or water leakage can lead to complaints, extra maintenance and a bad image with your customer. And in many cases, the difference lies in something you can’t see: the seals. That’s why choosing the right seal manufacturer is not a minor detail, it’s a strategic decision. Here is a practical checklist to help you evaluate your next curtain wall joint supplier. Materials: the right rubber for your façade? Not all joints are the same, nor does all rubber behave in the same way when exposed to the sun, rain or building movements. A good supplier should: If the supplier only talks about ‘standard rubber’ without much further detail… that’s a bad sign. To learn more about this topic, take a look at this article on curtain walls: joint geometry and drainage to prevent leaks. Dimensional control: tolerances that make the difference In a curtain wall system, everything has its tolerance, and joints are no exception. A good supplier of joints and profiles for façades should guarantee: Always ask how they check the dimensions and how often. If the answer is vague, the actual control is probably vague too. Validations and tests: beyond ‘this has always worked’ Your supplier should not rely solely on experience, but also on data. A joint extrusion company specialising in curtain walls should be able to offer: They don’t need to test everything for every project, but they do need to be able to demonstrate that their compounds and designs are validated. > More info on how a tightness test is performed. Deadlines, service and continuity of supply The best seal in the world is useless if it doesn’t arrive on time. When choosing between several seal manufacturers, consider: On site, every day counts; a joint supplier has to be aligned with that reality. Custom design and technical support: you are not just ‘another order’ In many curtain wall projects, standard joints fall short. That’s where a partner who can create custom profiles and joints makes all the difference: Why choose ISOGOM? At ISOGOM, we specialise in the design and manufacture of rubber profiles and gaskets for façade applications. As a gasket extrusion company, we can accompany you from the design phase to the construction site, combining: If you are looking for a reliable supplier of curtain wall joints, with custom design capabilities and local technical support, let’s talk. Request a quote and tell us what type of system you are developing: together we will find the joint extrusion solution that best suits your project.

In a curtain wall, everything seems to be perfect… until the first leak appears. And the problem is almost always in the same place: the rubber seal. Poor installation of rubber seals for glass in aluminium windows can ruin a façade that, on paper, was flawless. Let’s review the most common mistakes when installing seals in curtain walls and how to avoid them so that the work does not surprise you with the first side wind or the first serious downpour. What is actually tested in a curtain wall? In a lightweight façade system, glass, aluminium and sealants work together to ensure watertightness, thermal and acoustic insulation. Rubber seals are responsible for: Sealing the perimeter between the glass and the profile. Accompanying the expansion of the aluminium and glass. Preventing vibrations and air noise. If you want to learn more about types and functions, you can find more information in this guide on seals for aluminium windows, types, measurements and installation. Common mistakes when installing seals in curtain walls Installation faults and incorrect seating A classic: the seal for aluminium windows does not fit properly in its housing. This may be due to: Result: micro-channels of water, air whistling and, over time, premature deformation of the rubber. Incorrect use (or absence) of lubrication Fitting rubber seals to aluminium windows dry, especially on radii or corners, is an invitation for the seal to twist, mark or even tear. Ideally, a lubricant compatible with the seal material (EPDM, TPE, etc.) should be used. Impossible radii of curvature Another common mistake is to ask the seal to make a curve that it is not designed to make: Here the problem is not only one of assembly, but also of design: it is necessary to choose rubber seals for aluminium window panes with a geometry suitable for the curtain wall system and its radii. Poorly resolved cuts and open joints Cuts are a critical point: Short sections that generate too many joints in the same panel. In many cases, it is recommended to cut at a mitre (45°) and secure the joints according to the system manufacturer’s instructions. How to avoid these mistakes on site Some basics that make a difference: > For more information on types and designs of curtain walls. Do you need customised seals for your curtain wall? Each façade system has its own particularities: glass widths, chambers, wind pressures, watertightness requirements… That is why a standard seal often falls short. At ISOGOM, we specialise in the design and manufacture of custom rubber seals for aluminium windows and curtain walls, adapting: If you want to avoid surprises on site and reduce incidents due to leaks, contact us.

If you work with light façade systems, you already know this: every major project ends up at the test bench. Air permeability, water tightness and wind resistance have become standard requirements for developers, architects and system manufacturers. And in the middle of that entire assembly of profiles, anchors and glazing, a discreet component carries much of the outcome: the window seal that closes the curtain wall, both in fixed panels and operable areas. Let’s look at what is actually tested and how sealing rubbers are prepared to pass those tests with confidence. What Is Really Tested in a Curtain Wall System? In an accredited laboratory, the façade mock-up is assembled just like on site and subjected to a sequence of standardised tests: The required classifications vary depending on country, wind zone and building type, but the market trend is clear: higher classes and greater safety against extreme events. The Role of Rubber Seals in Aluminium Window Systems In a light façade system, rubber seals are far more than a simple “finishing detail”: When discussing rubber seals for aluminium window systems, both the section design and the choice of material (EPDM, TPE, co-extrusions, etc.) are critical for maintaining elastic properties over the years, even under UV radiation and continuous rain/sun cycles. Many of these solutions fall under the category of extruded rubber seal or sealing rubbers, which must remain stable under demanding environmental conditions. If you want to learn more about types and installation, ISOGOM offers a complete guide on seals for aluminium window systems. How Seals Are Prepared to Pass Performance Tests Before reaching the test bench, the work involving seals and profiles begins much earlier: What the Market Is Asking for Today Developers, architectural studios and system manufacturers consistently demand: For this reason, working with manufacturers capable of developing a tailor-made seal for your curtain wall system—accompanying you from the first sketch to the final test—is increasingly valued. In fact, global façade market reports point in exactly this direction: more sustainable envelope solutions, improved thermal performance and greater integration of intelligent technologies in curtain walls and façade systems. If you are designing a light façade or preparing your system for air/water/wind tests, ISOGOM can support you with customised seals and profiles, along with flexible production through our rubber and thermoplastic extrusion lines. Preparing your next façade test? Let’s talk about the seal you need to pass it on the first attempt. Contact us.