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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The SFS entry identifies a casing and tubing-hanger seal with a relatively large elastomer section and a spring incorporated at the inner surface.
Provide the groove or component drawing, medium, temperature, movement and existing part reference where available. Request the proposed seal construction and compound information so the selection can be assessed against the actual mating parts and operating 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.