Teflex Gasket Is Ring Joint Gasket China Manufacturer. RTJ Flange Gasket with R Type Oval/Octagonal Ring Gasket, RX Ring Gasket, BX Ring Gasket & Subsea Gasket SRX, SBX According To API 6A & 17D Standard Ring Gaskets. If You Need Ring Joint Gasket Size Chart, We Will Send To You. About Ring Joint Gasket Material, Teflex Can Supply Low Carbon Steel/Soft Iron/Stainless Steel 304/316L/321/347/410/F5/31803 F51/Inconel 800/825 Ect. About Surface With Oil/Zinc Plated For Soft Iron & Carbon Steel Gasket Material. Also, Teflex Provides Custom Made Service As Drawing. All RTJ Flange Gasket Hardness Have To As Standard That Avoids To Destroy RTJ Raised Face & Flat Face Flange.