The one-piece S-Seal eliminates installation problems that can occur when using multiple component seals. It can be stretched into place without splitting or compromising the non-extrusion elements of the seal.

S-seal sealing materials need to withstand pressures as high as 20 000 psi and temperatures of 177º C (350º F).

JST S-seal is made to perform in toughest situations, delivering reliable high-pressure static sealing. JST S-Seal elastomers are qualified to API 6A FF/HH (10% sour gas) and meet additional certifications which may include ISO 23936-2, NORSOK M-710.

JST S-seal is available in material NBR, HNBR, FKM with 2 integral anti-extrusion springs. Spring seals can be manufactured in a variety of standard or non-standard sizes, allowing them to be retrofitted into existing O-ring grooves.

JST ESS series is for piston. ESR series is for rod.

Product Highlights：

1. Designed to withstand pressures to 20,000 psi and temperatures to 350°F.

2. Single-piece design means easier installation, equipment assembly and maintenance.

3. Engineered to fit existing AS568 style and ISO 3601-2 style grooves.

4. Available for static and dynamic applications in materials suitable for demanding downhole environments.

5. Material is certified with NORSOK M710 H2S immersion test.

6. Rapid gas decompression resistance.