ESI Gate Valve Stem Seals
JST describes ESI spring-energised stem seals, with PEEK, filled PTFE and spring-material options to be selected for the actual gate-valve assembly.
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Guangzhou JST Seals Technology
The ESH stem-seal entry separately describes a spring-energised sealing arrangement; select the actual spring, jacket and groove dimensions.
Supply the seal drawing, groove dimensions, mating surfaces, motion, medium and operating conditions. Request the offered jacket and spring materials and installation documents, with the selected configuration checked against the actual static or dynamic sealing duty. Request the current catalogue or drawing for this item, and confirm the offered configuration and supporting documents with the company before specifying an order.
Guangzhou JST Seals Technology · Guangzhou, Guangdong
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Source reviewed: 2026-11-14. This directory summary organises the supplier’s published product information.
Back to company product centerJST describes ESI spring-energised stem seals, with PEEK, filled PTFE and spring-material options to be selected for the actual gate-valve assembly.
View product →JST describes its SPS P-type casing-head seal as an elastomer element with anti-extrusion rings, energised by injected sealant pressure.
View product →The SFS entry identifies a casing and tubing-hanger seal with a relatively large elastomer section and a spring incorporated at the inner surface.
View product →JST separately lists GTP piston seals; request the selected sealing-ring and energiser arrangement with dimensions for the actual piston groove.
View product →The STR entry covers piston-rod sealing and lists compound combinations including bronze-filled PTFE and NBR; confirm the exact offered set.
View product →