Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Sinopec Mitsui EPT 3112M EPDM

Sinopec Mitsui EPT 3112M is a high-performance EPDM rubber in the EPT series, featuring excellent heat resistance, ozone stability and compression set resistance. It offers superior weatherability and long-term durability for automotive seals, construction gaskets and industrial hoses. Designed for demanding extrusion and molding applications, it delivers consistent processing and reliable end-use performance.
  • sinopec mitsui ept 3112m epdm_f245adbd
  • sinopec mitsui ept 3112m epdm_f245adbd

Features Of Sinopec Mitsui EPT 3112M EPDM

  1. High ethylene content for excellent compression set resistance and dimensional stability.

  2. Optimized diene type and level enabling superior sulfur vulcanization efficiency and crosslink density control.

  3. Consistent molecular weight distribution ensuring uniform processing behavior in extrusion and calendering.

  4. Low gel content (<0.1%) supporting high surface quality in finished rubber products.

  5. Excellent ozone and weather resistance due to saturated polymer backbone and balanced terpolymer composition.

Typical Applications Of Sinopec Mitsui EPT 3112M EPDM

  1. Automotive weatherstripping and door seals.

  2. Roofing membranes for commercial flat roof systems.

  3. Industrial hose covers requiring heat and steam resistance.

  4. Bridge expansion joint profiles exposed to UV and cyclic deformation.

  5. Conveyor belt covers demanding abrasion and aging resistance.

Specifications Of Sinopec Mitsui EPT 3112M EPDM

Chemical TypeTerpolymer of Ethylene, Propylene, and Non-Conjugated Diene (ENB)
Product FormStandard bale (approx. 25 kg), black elastomer
AppearanceBlack, uniform rubbery solid with smooth surface
Ethylene Content (wt%)58–62
Mooney Viscosity (ML 1+4 @ 125°C)40–48
Diene TypeENB (Ethylidene Norbornene)
Volatile Matter (wt%)≤0.5
Ash Content (wt%)≤0.1


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