Lapa maoliHe kūpono ia no ka wai, ka wai kai, ka ea, ke kinoea inert, ka alkali, ka wai paʻakai a me nā media ʻē aʻe, akā ʻaʻole kū i ka ʻaila mineral a me nā solvents non-polar, ʻaʻole ʻoi aku ka mahana o ka hoʻohana lōʻihi ma mua o 90 ℃, maikaʻi loa ka hana haʻahaʻa haʻahaʻa, hiki ke hoʻohana ma luna o -60 ℃.

  Lapa nitrileHe kūpono ia no nā huahana petroleum, e like me ka aila, ka aila lubricating, ka aila wahie, a me nā mea ʻē aʻe, ʻo ka mahana hoʻohana lōʻihi he 120 ℃, e like me ka aila wela hiki ke kū i ka 150 ℃, haʻahaʻa haʻahaʻa -10 ~ -20 ℃.

  Neoprene rubberHe kūpono ia no ka wai kai, ka waiʻawaʻawaʻawaʻawa, ka alkali nāwaliwali, ka paʻakai paʻakai, ke kū'ē maikaʻi loa i ka oxygen a me kaʻelemakule ozone,ʻoi aku ka haʻahaʻa o kaʻaila i ka nitrile rubber aʻoi aku ka maikaʻi ma mua o nā'āpana'ē aʻe, ka mahana hoʻohana lōʻihi ma lalo o 90 ℃, ka mahana hoʻohana kiʻekiʻeʻaʻole iʻoi aku ma mua o 130 ℃, haʻahaʻa haʻahaʻa -30 ~ -50 ℃.

Nui nā ʻano opulupulu fluorine, loaʻa iā lākou ke kūpaʻa waika maikaʻi, ka pale ʻana i ka oxidation a me ka pale ʻana i ka aila, ka pale pale. Hiki ke hoʻohana ʻia i loko o ka ʻenekini a pau e like me kekahi mau aila a me nā solvents, ka mahana hoʻohana lōʻihi ma lalo o 200 ℃.

ʻO ka pepa Rubber ma ke ʻano he flange gasket, hoʻohana pinepine ʻia no nā pipelines a i ʻole nā ​​​​manholes i wehe pinepine ʻia, nā lua lima, ʻaʻole i ʻoi aku ke kaomi ma mua o 1.568MPa. No ka mea ma nā ʻano gaskets a pau, ʻo nā gaskets rubber ka mea palupalu, maikaʻi ka hana hoʻopaʻa ʻana, a hiki ke pāʻani i kahi hopena sealing ma lalo o kahi liʻiliʻi ma mua o ka hoʻouka ʻana. Ma muli o kēia, ke hoʻokau ʻia i ke kaomi kūloko, maʻalahi ke ʻoki ʻia ma muli o ka mānoanoa a i ʻole ka paʻakikī o ka gasket.

ʻO ka pepa Rubber i hoʻohana ʻia i loko o benzene, ketone, ether a me nā mea hoʻoheheʻe kūlohelohe ʻē aʻe, maʻalahi ke ʻike ʻia ka pehu ʻana, ka loaʻa ʻana o ke kaumaha, nā mea palupalu, paʻa i ka hopena o ka sila. ʻO ka maʻamau, inā ʻoi aku ka nui o ka pehu ma mua o 30%, ʻaʻole hiki ke hoʻohana.

I ka hihia o ka haʻahaʻa haʻahaʻa (ʻoi aku ma lalo o 0.6MPa) a me ka vacuum, ʻoi aku ka maikaʻi o ka hoʻohana ʻana i nā pads. Loaʻa i ka lāʻau lapaʻau ka ʻili maikaʻi a me ka haʻahaʻa haʻahaʻa. No ka laʻana, ʻoi aku ka maikaʻi o ka pulupulu fluorine no ka hoʻopaʻa ʻana i nā gaskets o nā pahu pahu, a ʻo ke degere kaʻa a hiki i 1.3 × 10-7Pa. Ke hoʻohana ʻia ka pā paʻa i ka pae o ka vacuum degere o 10-1 ~ 10-7Pa, pono ia e kālua ʻia a pā.