
We are active in industries of oil & gas drilling, semiconductor, new energy, construction machinery, aerospace, nuclear & wind power, and medical equipment. We aim high and look far, providing professional and reliable sealing solutions for particular harsh applications.

JST provide pump packing, valve insert, packer element, v stack, and bonded seal for fracturing equipments and downhole tools.

JST API6A wellhead equipment seals include valve stem packing & face seal for gate valves, FS seal, S seal, P seal, lockscrew seal for casing head & tubing hanger.

JST's PTFE seals including spgo, spns, spgw, kzt, and wear ring, wear strips and v packigns are widely used in hydraulic cylinders.
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