High-Temperature Rubber Gaskets & Seals Manufacturer
Engineered to Survive the Heat
When operating temperatures exceed 100°C (212°F), standard elastomers begin to degrade, lose elasticity, and eventually fail. At RiseUp Rubber, we understand that a high temperature rubber gasket is not just a component; it is a critical safety barrier against leakage in extreme environments.
Why Material Selection Matters True rubber heat resistance goes beyond simply not melting. Prolonged exposure to thermal cycling can cause ordinary seals to harden, crack, or suffer from permanent deformation (compression set). Whether you need heat resistant rubber for an industrial oven or a heat proof rubber seal for an automotive engine, we engineer custom compounds designed to maintain their integrity from 200°C up to 300°C.
Don’t let thermal failure compromise your system. Trust our high temp rubber solutions to deliver a long-lasting, leak-free seal under the most demanding thermal loads.
Choosing the Right High Temperature Gasket Material
Not all heat is created equal. Selecting the correct high temperature gasket materialdepends heavily on what else the seal touches—is it clean air/food, or aggressive oil/fuel?
1. Clean Heat & Hygiene: High Temperature Silicone Rubber (Best for: Ovens, Autoclaves, Medical Devices, Food Processing)
• The Material: High temperature silicone rubber is the undisputed king of clean thermal environments. It remains flexible and odorless even at extreme temperatures.
• Performance: Standard high temp silicone rubber performs reliably from -60°C up to +230°C (+446°F). Special heat-stabilized grades can reach +300°C intermittent.
• Why Choose It: If you need a high temp silicone gasket that meets FDA / USP Class VI standards and resists fungal growth, this is your solution.
• Limitation: Not recommended for dynamic seals involving oil or steam pressure (poor abrasion resistance).
2. Dirty Heat & Chemicals: Viton® (FKM) (Best for: Engines, Fuel Systems, Aerospace, Chemical Processing)
• The Material: When heat meets aggressive fluids, Silicone fails. You need a robust high heat gasket material like Viton® (Fluoroelastomer).
• Performance: Excellent resistance to temperatures up to +250°C (+482°F) while simultaneously blocking gasoline, diesel, acids, and hydraulic fluids.
• Why Choose It: It is the premier gasket material high temperature solution for automotive and industrial machinery where oil contact is inevitable.
3. Extreme Specialty: Fluorosilicone & Fiberglass (Best for: Aerospace Fuel & Extreme Thermal Barriers)
• Fluorosilicone: Combines the low-temp flexibility of silicone with the oil resistance of FKM. Ideal for aerospace hi temp gasket material needs.
• Fiberglass/Silicone Composite: For applications requiring structural rigidity and heat shielding, used as a thermal barrier rather than just a seal.
Custom Profiles: From Molded Seals to Extrusion
Whether you need a tiny precision O-ring for a sensor or a 10-meter continuous seal for an industrial furnace door, RiseUp Rubber offers comprehensive manufacturing capabilities to suit your geometry.
1. Precision Molded Gaskets (Compression & Injection)
For complex 3D geometries requiring tight tolerances, we utilize compression and LSR molding. This process is ideal for creating discrete high temp gaskets used in pumps, valves, and automotive housings.
• Capabilities: Flash-free molding, custom cross-sections, and metal-bonded high heat seal components.
2. Extruded Profiles & Weather Stripping
Unlike simple molders, we operate advanced extrusion lines to produce high temperature silicone rubber strips in continuous lengths. These are essential for sealing large perimeters where a molded part would be too expensive or impossible to tool.
• Key Product: High temp weather stripping. Designed with D-shape, P-shape, or e-shape profiles, these compressible seals engage perfectly with oven doors and autoclave chambers to lock in heat.
• Customization: We can cut high temperature silicone rubber extrusions to specific lengths or splice them into continuous rings (vulcanized joints) to create a seamless high temperature gasket seal.
3. Die-Cut Flat Gaskets
For cost-effective sealing between flat flanges, we offer precision die-cutting of high temperature seal sheets. Available in various thicknesses with or without adhesive backing.
Engineering for Extreme Environments: Beyond Just Melting
Many engineers mistakenly believe that as long as the material doesn’t melt, the seal works. This is false. The most common cause of failure in a heat resistant gasket is not melting—it is the loss of elasticity, known as “Compression Set.”
1. The Invisible Killer: Compression Set At high temperatures, rubber tends to relax and lose its “memory.” If a gasket is compressed between flanges in a hot engine, it may take on that flattened shape permanently. When the engine cools down and the metal contracts, the now-flattened heat gasket fails to rebound, creating a gap and a leak.
• The RiseUp Solution:
We utilize specialized “Low Compression Set” curing agents and perform rigorous Post-Curing (4 hours @ 200°C) on our silicone and FKM parts. This drives out volatiles and stabilizes the polymer cross-links, ensuring your heat proof gasket springs back seal after seal.
2. The Volume Problem: Thermal Expansion Rubber expands roughly 10 times more than steel when heated. If your groove design doesn’t account for this volume increase, a heat resistant gasket will expand until it extrudes out of the gap or fractures the housing.
• The RiseUp Solution: Our engineering team assists with groove volume calculations, ensuring there is sufficient “void space” for the rubber to expand safely without compromising the seal.
FAQ: High Heat Sealing Solutions
Q: What is the maximum temperature your gaskets can handle?
A: It depends on the material. Our standard high temperature seal compounds perform as follows:
• Silicone: Continuous 230°C (446°F), Intermittent 300°C (572°F).
• Viton® (FKM): Continuous 250°C (482°F).
• Fluorosilicone: Continuous 200°C (392°F) with fuel resistance.
Q: Can I use a high heat silicone gasket for engine oil sealing?
A: No. While silicone handles the heat, it will swell when in contact with oil. For engines, transmissions, or fuel systems, we recommend Viton® (FKM) as the ideal high heat gasket material.
Q: Do you offer flame-retardant rubber?
A: Yes. We can compound high heat seal materials to meet UL94 V-0 standards, meaning the rubber will self-extinguish if ignited, preventing fire spread in electronics or rail applications.
H2: Ready to Beat the Heat? Don’t let thermal failure compromise your product’s safety. From medical autoclaves to automotive turbos, RiseUp Rubber engineers the high temp rubber gaskets you can trust.
MOQ 500 pcs, Accept Customization for Small Order. Design Products as Your Idea.
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Alan Chen
Product Sales Manager & Rubber Specialist at RISEUP
