Guangzhou JST Seals Technology Co., Ltd. is a national high-tech enterprise with 24 years of innovation history. Since its establishment in 1995, JST has been insisting on the research and development of new technologies, new materials and seals application. JST is committed to providing customers with more reliable sealing solutions.JST's products are widely used in the areas of oil and gas exploration, drilling and fracturing, LNG equipment, construction machinery, high pressure… Show more Guangzhou JST Seals Technology Co., Ltd. is a national high-tech enterprise with 24 years of innovation history. Since its establishment in 1995, JST has been insisting on the research and development of new technologies, new materials and seals application. JST is committed to providing customers with more reliable sealing solutions.JST's products are widely used in the areas of oil and gas exploration, drilling and fracturing, LNG equipment, construction machinery, high pressure water pumps etc. Certificate: ■Passed ISO 9001 and API Q1 international quality management system certification■Obtained 12 "Guangdong High-tech Products" certificates■Approved as "Guangzhou municipal R&D institution"■Approved as "National high-tech enterprises"Main products: 6A/6D Valve sealsWellhead casing sealsHydraulic seals.........Proved test: *PR2 test*RGD-NORSORK M710 test*H2S immersion test........Main Material: PTFEPEEKElgiloy or stainless steel springNBRHNBRFKM......Welcome to contact wangyawei@jst-seals.com if you have any inquiries. Show less