FEP envelope silicone O-ring are made of special heat resistant rubber coated by fluoride plastic with unique manufacture technique. 　 　 Therefore,they possess the characteristic of low permanent deformation rate given by rubber O-ring,along with the special features 　 　endowed by fluoride plastic such as resisting heat,cold,oil,rub,climate changersand chemical corrosion.
Dimensions range:
2.62 3.00 3.53 4.00 4.50 5.00 5.33 5.70 6.00 6.30 7.00 8.00 20 √ √ √ X X X X X X X X X ~30 √ √ √ √ √ √ √ X X X X X ~35 √ √ √ √ √ √ √ X X X X X ~40 √ √ √ √ √ √ √ X X X X X ~45 √ √ √ √ √ √ √ √ X X X X ~50 √ √ √ √ √ √ √ √ X X X X ~55 √ √ √ √ √ √ √ √ √ √ X X ~60 √ √ √ √ √ √ √ √ √ √ X X ~65 √ √ √ √ √ √ √ √ √ √ √ √ ~70 √ √ √ √ √ √ √ √ √ √ √ √ ~300 √ √ √ √ √ √ √ √ √ √ √ √ ~500 X X √ √ √ √ √ √ √ √ √ √