Product Overview
Engineered to thrive in the extreme under-hood environments of modern vehicles, our
FKM High-Temp Rubber Seals represent the pinnacle of automotive sealing technology.
Crafted from premium fluorocarbon (FKM/Viton®) fluoroelastomer—a high-performance material renowned for its unmatched high-temperature stability and broad chemical resistance—these seals are designed to withstand the harshest conditions in automotive powertrains. Unlike conventional rubber seals, they solve the critical issue of premature failure caused by engine oils, coolants, and exhaust gases in turbocharged engines, ensuring zero leakage even in continuous operation at 200°C+. With a low compression set (<15% after 70 hours at 177°C per ASTM D395), they maintain consistent sealing force over the vehicle’s lifetime, reducing warranty claims and maintenance costs for automakers and fleet operators.
Product Specifications
Parameter | Value |
Material | FKM/Viton® fluoroelastomer (60–80% fluorine content), with FDA-compliant grades for fuel system contact |
Temperature Range | -20°C to 240°C (continuous operation), 300°C (intermittent exposure, up to 2 hours) |
Pressure Rating | Up to 30 bar (dynamic applications: rotating/shifting components), 50 bar (static seals) |
Chemical Resistance | Resistant to synthetic oils (API SN+, ILSAC GF-6), fuels (gasoline, diesel, E85), and brake fluids (DOT 3/4/5.1) |
Hardness | 70–90 Shore A (customizable in 5 Shore increments) with ±5 Shore tolerance |
Certifications | UL 94 V-0 (flame retardant), SAE J2006 (automotive seal performance), REACH compliant |
Features
Ultra-High-Temperature Performance: Retains 90% of original elasticity at 240°C (continuous operation), making them critical for turbocharger oil seals, exhaust manifold gaskets, and EGR valve seals where heat soak is common.
Advanced Fuel & Oil Resistance: Withstands ethanol blends (E85), biodiesel (B100), and synthetic engine oils (PAO-based) without swelling or hardening, maintaining seal integrity for 150,000+ km in passenger vehicles.
Precision Molding Capabilities: Utilizes liquid injection molding (LIMS) technology to achieve ±0.05mm dimensional tolerances, enabling complex geometries like multi-lip seals, bonded metal-rubber assemblies, and anti-extrusion rings.
Low Outgassing Properties: Emits <1% weight loss under vacuum (ASTM E595), minimizing contamination in EV battery cooling systems, fuel injectors, and emission control components.
OEM-Grade Compatibility: Meets SAE J1244 standards for crankshaft seals, SAE J2227 for O-rings, and automaker specifications (Ford WSS-M99P1111-A, GM 9985444) for direct factory integration.
Applications
Internal Combustion Engines: Sealing cylinder heads, camshaft covers, and timing chain housings in gasoline (e.g., Ford EcoBoost) and diesel (Volkswagen TDI) engines.
Turbocharging Systems: Preventing oil leakage in turbocharger center housings, wastegate actuators, and intercooler connections in performance vehicles and heavy-duty trucks.
Exhaust & Emission Systems: Withstanding 300°C+ exhaust gases in catalytic converters, diesel particulate filters (DPF), and selective catalytic reduction (SCR) systems.
Electric & Hybrid Vehicles: Sealing battery packs, thermal management system hoses, and inverter coolant lines, resisting dielectric fluids and high-voltage insulation requirements.
