• March 17. 2025

The NORSOK M-710 RGD test is a standard for the performance of rubber sealing materials under rapid gas decompression (RGD) conditions. The test is designed to evaluate the ability of sealing materials to withstand pressure and rapid gas decompression in the oil and gas industry. The test standards and methods The NORSOK M-710 standard specifies the specific conditions and steps of the test: Test...

• July 22. 2024

JST KALFLUO 8520 is a kind of FFKM material which is specially cured for very high performance applications, with high purity, good chemical resistance and heat stability properties. It is mainly used for semiconductor manufacturing applications, which is an ideal sealing material for most dry (plasma etching, PECVD, LPCVD, metal CVD, PVD, ALD, plasma cleans) and wet semiconductor processes (wafer...

• August 03. 2022

S Seals is made from elastomer and two metal garter spring. The metal garter spring is incorporated into the elastomeric seal element. The one-piece S seal eliminates the installation issues that may occur when using multi-component seals. It can be stretched into place without splitting or damaging the non-extrusion components. S seal can be manufactured to accommodate almost any gland size, incl...

• July 22. 2022

JST 3" External S seal passed PR2 test, as well as 13” S seal. JST S seal use material HNBR85+316SS, BV witnessed HNBR S seal at working condition -29°C  to +121°C, 10000PSi, product design refer to API 6A -annex F. The material HNBR(H3385) meet API immersion test, RGD test. The Inspector also applied following activities: 1: Reviewed the test certificate of raw material HNBR ( H3385), the Re...

• July 06. 2022

JST 3" External S seal use material HNBR85+316SS, we verify the S seal at working condition -29°C  to +121°C, 10000PSi, product design refer to API 6A -annex F. Below are the external S seal main test contents: • 1-Visual and dimension inspection for the seals and test fixture before the testing • 2-Witness the seals assembling progress • 3-Witness the sealing test for the O-ring from C port ...

• June 01. 2022

JST Seals can provide vee packing manufactured from its range of high performance elastomers, PTFE and PEEK. Typical applications include mud pump packing, where the seal encounters high pressure and grinding media containing various solids, oil and water. 1. Test purpose The objective of this test procedure is to evaluate the quality of  JST non elastic seal, V-Packing seal stack design as p...

• April 15. 2022

Packer elements are rubber seals that operate under specific down-hole conditions and provide an elastomeric seal for either short-term or long-term completion. Packer elements are used between sections of oil and gas production tubing to prevent fluids and pressure from leaking through the joints. This protects the casing, production tubing, liner and wellbore wall above and below the producing z...

• March 29. 2022

Lockdown Screw Seals, also called lockdown screw packing is made from elastomer and two SS metal end caps. It provides a dependable seal in multiple pressure ranges and service environments. JST has conducted the PR2 test to qualify the existing elastomer/metal lockdown screw packing to 20,000 psi at a temperature range of -50 to 350ºF. This test consisted of a 20,000 psi nitrogen gas proof test a...

• March 03. 2022

JST Seals produces various sizes of FS seal and P seal, from 4.5" to 36". FS seal: FS seal is suitable for 15000Psi, LU temperature rating, chemicals with H2S/CO2. Below drawings show our standard FS seal groove dimension and product drawing. 26” FS seal 30” FS seal P seal: Regarding P seal, JST has two different designs. One design is rubber reinforced with two 316ss wire mesh back up rings, anot...

• February 22. 2022

Hammer Union Seals are commonly applied in applications like the Chemical Processing, Offshore Drilling, Petrochemical, and Water and Gas industries. It helps prevent leakage in hammer union pipe connections. Generally, materials include Nitrile (NBR), FKM, HNBR. In addition to the standard elastomer materials, anti-extrusion rings can be reinforced in Stainless Steel or Brass. It is also known as...