... used on the top of the wellhead on high pressure oil well, can do the Frac job for isolating the fluid ... ●Size: 1-13/16" ~ 7-1/16” ●Working Temperature: K, L, P, R, S, T, U, V ●Material Class :AA, BB, CC ... , HH ●Specification Level: PSL1~PSL4 ●Performance Requirement: PR1, PR2 ●Application: Oil, Chemical Industry, etc ●Medium: Oil, Gas, Water, etc