EPDM (Ethylene Propylene Diene Methylene) yog copolymer ntawm ethylene, propylene, thiab ib qho me me ntawm peb cov monomer uas tsis yog conjugated hydrocarbons. Nws lub npe thoob ntiaj teb yog Ethyiene Propyene Diene Methylene, abbreviated li EPDM. Nws tsuas yog muaj lub luag haujlwm ntawm kev tiv thaiv corrosion, huab cua tsis kam, kev laus ua haujlwm, tiv thaiv tshav ntuj, thiab UV tiv thaiv, tshwj xeeb tshaj yog cov dej tsis zoo, hluav taws xob rwb thaiv tsev zoo thiab elasticity, thiab lwm yam khoom siv lub cev thiab txhua yam khoom. Cov txiaj ntsig no yog irreplaceable los ntawm lwm yam ntaub ntawv.
Silicone roj hmab sealing strips yog tsim los ntawm alternating silicon thiab oxygen atoms, feem ntau muaj kub tsis kam, tsis kub tsis kam, ozone kuj, huab cua tsis kam, thiab physiological stability. Lawv muaj qhov tsis sib xws ntawm rwb thaiv tsev kev ua tau zoo, nrog rau zoo heev hydrophobicity thiab tsim nyog breathability. Zoo silicone roj hmab qhov rooj thiab qhov rais sealing strips siv tau ntev, nrog rau kev pab cuam lub neej ntau tshaj peb npaug ntawm cov roj hmab zoo tib yam. Lawv muaj elasticity zoo thiab tsis kam rau compression deformation, zoo heev aging kuj, thiab yog cov khoom siv roj hmab ruaj khov heev.