• June 08, 2022

Further to the 13" S Seal PR2 test in Dec. 2021, JST conducted and passed the 3" external S seal PR2 test, LU, 10K Psi, as per API 6A Annex F, 21st edition, with the witness by third party BV from 16th May to 24th May.

• March 08, 2022

Happy Women's Day!

• January 13, 2022

It’s great to announce that JST successfully got its invention of A Slip Sealing Structure, which was authorized by the U.S. patent and Trademark Office and obtained the invention patent certificate. This slip sealing structure comprises a cylindrical sealing body comprising an upper and a lower end surfaces, wherein an outer side and an inner side of at least one end surface of the sealing body are provided with an outer metal retaining ring and an inner metal retaining ring respectively, a fabric covering layer is disposed on the at least one end surface, and the outer and inner metal retaining rings are respectively pressed against an outer and inner edges of the fabric covering layer such that the fabric covering layer provides support for the outer and inner metal retaining rings. The slip sealing structure according to the present invention can meet the application requirements of the slip casing head under the operating conditions of a high pressure of 15000 PSI and a PU temperature range (from -29℃. to 121℃.)

• December 30, 2021

Since its establishment in 1995, JST has always adhered to the R & D and Application Research of new technologies and new materials, and is committed to providing customers with more reliable sealing system solutions. It has accepted the baptism of the market and finally achieved fruitful results. Yesterday, all JST employees shared the joy and brilliance of the 26th anniversary.