What are the advantages and characteristics of EPDM sealing strip


EPDM sealing strip is a copolymer of ethylene, propylene and a small amount of third monomer non-conjugated diene, referred to as EPDM rubber. It has physical and mechanical properties such as heat aging resistance, low temperature resistance, ozone resistance, chemical resistance, water resistance, good electrical insulation and elasticity.PVC cannot be replaced.

EPDM sealing strip can be filled with a large amount of oil and filler, thereby reducing the cost of rubber products and making up for the high price of ethylene propylene rubber. For EPDM sealing strips with high Mooney value, the physical mechanical energy after high filling is not greatly reduced.

EPDM sealing strip performance characteristics:

1. Anti-aging:

EPDM sealing strip has good weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, color stability, electrical properties, oil and room temperature fluidity. EPDM rubber tape can be used inLong-term use under 120, 150-200 can be temporary or intermittent use. The temperature of use can be increased by adding appropriate antioxidants. Peroxide-crosslinked can be used under harsh conditions. Under the conditions of ozone concentration of 50pphm and tensile strength of 30%, EPDM rubber can reach more than 150 hours without cracking.

2. Corrosion resistance:

EPDM sealing strip has good tolerance to various chemical substances such as alcohol, acid, alkali, refrigerant, detergent, animal and vegetable oil, ketone, grease and so on.

3. Water vapor resistance:

EPDM sealing strip has good water vapor resistance, which is estimated to be better than its heat resistance. InIn the 230 superheated steam, there is no change in appearance after nearly 100 hours, while fluorine rubber, silicone rubber, fluorosilicone rubber, butyl rubber and natural rubber are experienced under the same conditions.


4. Hot water resistance:

EPDM sealing strip also has good superheated water resistance, but it is closely related to all vulcanization systems.

5. Electrical characteristics:

EPDM sealing strip has good electrical insulation and corona resistance, and its electrical performance is better than or close to styrene butadiene rubber, chlorosulfonated polyethylene, polyethylene and cross-linked polyethylene.


Because there is no substituent in the molecular structure of the EPDM sealing strip, the molecular cohesion energy is low, and the molecular chain can maintain flexibility in a large range, second only to natural rubber and butadiene rubber, and can still be maintained at low temperatures.

7. Adhesion:

Due to the lack of active groups in the molecular structure, the cohesive energy of the EPDM sealing strip is low, and the rubber material is easy to spray frost, so its self-adhesion and mutual adhesion are poor.

EPDM sealing stripIt does not contain heavy metals such as halogen and lead, and can be recycled after several years, which meets the requirements of green building materials.

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Wanben car

Jiangsu Wanben specializes in the production of various door and window sealing strips for automobiles, construction machinery, construction, railways, etc. The products cover EPDM, PVC, CR, NBR, NR, TPV and other materials to design various seals like plastic and rubber. It can realize the full matching of automobiles and construction machinery vehicles and has independent export management rights. Its products are exported to more than ten countries and regions such as Asia, America and Europe.

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