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EPDM sealing strips exhibit excellent wear resistance.
1. EPDM sealing strips exhibit excellent wear resistance and are also known as ternary ethylene-propylene rubber strips. "EPDM" is the English abbreviation for this material, which is essentially an artificially synthesized rubber. Its main components include butadiene (CH₂=CH₂) and propylene (CH₂=CH-CH₂); after the introduction of a third monomer, it transforms into EPDM rubber, making it essentially a saturated high-polymer material.
2. Excellent resistance to aging—no cracks were observed even after being exposed to direct sunlight for three years.
3. Chemical resistance: It exhibits exceptional resilience against a wide range of chemicals—such as acids and bases—and shows minimal degradation even after prolonged exposure.
4. Excellent impact elasticity with high rebound rate. The material maintains stability even in low-temperature environments—becoming rigid at -57°C and brittle at -177°C.
5. Excellent resistance to high-temperature aging. Typically, it can be used continuously at temperatures up to 150°C, while intermittent applications can withstand short-term exposure to temperatures as high as 200°C—and its physical properties degrade relatively slowly.
6. Excellent insulation performance—resistors maintain superior functionality even when submerged in water.
7. EPDM sealing strips exhibit excellent temperature resistance, making them superior even among conventional rubbers. They also demonstrate significantly better ozone aging resistance—tested to withstand cracking for 2,450 hours when exposed to a substance containing 100 ppm of active oxygen. In comparison, styrene-butadiene rubber developed major cracks within just 534 hours, while chloroprene rubber showed noticeable gaps after only 46 hours.
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