• May 20. 2022

Customer Question: Customer used a competitor 's S seal for 10000PSi and PU temperature classes. During installation at the Minden store, using a competitor's elastomer seal, the customer noticed some movement in the valve seat . Application details: Material: HNBR90+316SS Groove: 125 Groove size: 7.181X6.696X0.375inch How is the JST seal solv...

• June 09. 2022

FS casing and tubing seals are uniquely designed sealing elements that provide excellent sealing in areas where high seal deflection is required. The design features of this seal allow the component to compensate for changes in piping, housing, or large diameter parts. The use of metal clamping springs provides extrusion resistance. The open coil has no initial tension during manufacturing, so the...

• 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 ...

• 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 25. 2022

JST compound H3385 is a hydrogenated acrylonitrile-butadiene-rubber commonly referred to as HNBR or HSN, with excellent physical characteristics, outstanding abrasion resistance and chemical resistance to common hydraulic fluids, sour oils/gases(H2S) and crude oils. H3385 has been optimized to withstand the risk of rapid gas decompression(RGD) or explosive decompression(ED)or anti-explosive decomp...

• 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...

• August 26. 2022

JST develops and supplies downhole tool seals for the oil and gas industry. We have developed and improved PTFE, NBR, HNBR, FKM, peek and other materials. These materials have high pressure resistance and good sealing performance, and have passed the hydrogen sulfide immersion test and explosion-proof test. Generally speaking, sealing materials suitable for downhole harsh conditions are not easy t...

• September 09. 2022

Guangzhou JST Seals offers downhole sealing solution and products. Bottom hole assembly (BHA) tools (such as impactors and jars) need to be sealed to protect the tool hydraulic system from the impact of abrasive drilling mud and cuttings in the hole. Measurement while drilling (MWD) tools sometimes need high-temperature sealing solutions. This field operation is expensive, If seal failed it would ...