ʻO nā mea maikaʻi a me nā pōʻino o ka PDM hose: kūʻokoʻa kūʻokoʻa, ka hoʻokaʻawale uila a me ke kū'ē ozone.ʻOi aku ka maikaʻi o ka wā, ka pale ozone, ka wela, ka waikawa a me ka alkali, ke kū ʻana o ka mahu wai, ke kūpaʻa kala, nā waiwai uila, nā waiwai hoʻopiha aila a me ka wai wela o ka lumi.ʻO nā mea hoʻomaʻemaʻe, nā aila holoholona a me nā mea kanu, nā ketones a me nā momona a pau ke kūpaʻa maikaʻi;akā, ʻaʻohe paʻa paʻa i loko o nā mea hoʻoheheʻe momona a me nā mea ʻala (e like me ka gasoline, benzene, etc.) a me nā aila mineral.Ma lalo o ka hana lōʻihi o ka acid concentrated, e hoʻemi ana ka hana i ka pale ʻana i ka mahu wai a manaʻo ʻia ʻoi aku ka maikaʻi ma mua o kona kūpaʻa wela.Ma 230 ℃ superheated mahu, ʻaʻohe loli i ka helehelena ma hope o 100h.Akā, ma lalo o nā kūlana like, ua ʻike ʻia ka hoʻohaʻahaʻa ʻana o ka hiʻohiʻona ma hope o ka manawa pōkole.No ka mea ʻaʻohe polar substituents i loko o ka molecular structure of ethylene-propylene rubber, haʻahaʻa ka ikehu cohesive o ka mole, a hiki i ke kaulahao mole ke hoʻomau i ka maʻalahi ma kahi ākea, ʻelua wale nō i ka ʻōpala maoli a me ka pulupulu butadiene, a hiki ke hoʻomau ʻia. mālama ʻia ma nā mahana haʻahaʻa.Ethylene-propylene rubber nele pūʻulu hana ma muli o kona molecular structure, he haʻahaʻa cohesive ikehu, a me ka pulupulu mea oluolu e mohala, a me kona pono-adhesiveness a me kekahi adhesion i loa ilihune.