About Us

JST Seals is a leading manufacturer of high-performance seals for countless industries including construction, oil and gas, LNG, wind power, chemistry, coal mining. For over 25 years, we are committed to our philosophy of "reliable sealing solution" and "excellent experience" with superior quality, reasonable price and fast delivery. 

  • 25 25

    Years of Experience

  • 40 40

    Patents & Invention

  • 50 50

    Countries covered

  • 1 1

    API Q1 Certified Seal Supplier in China

Construction Industry

The Construction industry requires long lasting sealing solutions. The seals in use must handle thousands of hours of continual use and be extremely reliable in all environments and terrains. 

  • Long lasting Long lasting
  • Reduce energy consumption Reduce energy consumption
  • High efficiency and energy save High efficiency and energy save
Oil & Gas Industry

JST develops, manufactures and supplies high performance sealing solutions for demanding Oil & Gas applications of drilling and exploration, completion and production, and intervention activities.

  • Chemical compatibility Chemical compatibility
  • Ability to cope with harsh conditions Ability to cope with harsh conditions
  • Extended longevity of service Extended longevity of service
  • Resistance to aggressive fluids & steam injection at high temperatures Resistance to aggressive fluids & steam injection at high temperatures
API6D & LNG

Sealing at cryogenic temperatures has its own unique set of challenges. JST has a wide range of solutions for cryogenic sealing applications. Cryogenic seals require skillful design by combining the right type of material, seal configuration, and spring energizer to overcome the dimensional fluctuation of all mating parts.

  • Rocket propulsion Filling Systems Rocket propulsion Filling Systems
  • LNG Compressors LNG Compressors
  • Cryogenic Valves Stem Seals Cryogenic Valves Stem Seals
  • Cryogenic Butterfly Seat Seals Cryogenic Butterfly Seat Seals
  • Cryogenic Transfer Pumps Cryogenic Transfer Pumps
  • LNG Fueling Systems LNG Fueling Systems
  • Hydraulic Seal
    Hydraulic Seal

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  • Oil & Gas Seal
    Oil & Gas Seal

    LEARN MORE >>

  • API 6D Ball Valve & LNG Seal
    API 6D Ball Valve & LNG Seal

    LEARN MORE >>

  • Phenolic wear ring catalogue
    WR phenolic resin wear ring
  • fabric vee packing
    Hydraulic rubber fabric V packing seal
  • hydraulic PTFE wear strip
    PTFE guide and wear strip
  • PTFE wear ring catalogue
    Hydraulic cylinder PTFE wear ring
  • Hydraulic rod PTFE seals
    Hydraulic rod PTFE SPNS step seal
  • Hydraulic piston seal SPGW
    Hydraulic piston PTFE SPGW seal
  • ptfe SPGO Piston Seal
    Hydraulic piston PTFE SPGO seal
  • Bronze filled PTFE KZT seals
    Hydraulic cylinder PTFE seal KZT
  • Hydraulic Seal Manufacturers
    Double acting PTFE piston seals
  • EU pneumatic rod seal
    PU pneumatic rod seal EU
  • peek chevron seal stacks
    PEEK V stacks for downhole tool
  • s seal groove dimensions
    HNBR S seal for downhole application
  • valve face seal catalogue
    FLS valve spring energized face seal
  • Spring energized Outer Face Seal
    PEEK OFS OD face seal
  • OFS Inner seat seal
    PEEK OFS ID face seal
  • gate valve stem seals
    Gate valve stem packing seal
  • Valve Stem Seal specification
    PTFE Spring energized valve stem packing
  • hammer union seals ring
    Standard size hammer union seal
  • BOP Seal
    BOP inner and outer seal
  • Rapid gas decompression material o ring
    Rapid Gas Decompression O ring
  • LNG cryogenic valve seals
    Elgiloy spring ball valve seals for cryogenic applications
  • Spring energized PTFE seals
    High pressure ball valve seat seal
  • Ball valve high pressure lip seals
    API 6D ball valve piston seal
  • Cryogenic valve seals
    Cryogenic ball valve stem seal
  • API 6D ball valve seal
    Ball valve high pressure lip seal
  • lip seal design for ball valves
    Spring energized ball valve seal
  • API 6D ball valve seal material
    Helical Spring ball valve stem seal
  • QUALITY COMMITMENT
  • "QUALITY COMMITMENT"

    Manufacturing a quality product is the responsibility of each and every individual at JST. Our strict quality systems ensure that our products will continually exceed our clients' expectations.

  • "CONTINUOUS IMPROVEMENT"

    JST has been taking sealing challenges, designing and manufacturing seals for various industries, whether it's standard or customized, we're able to offer you the best sealing solutions.

  • CONTINUOUS IMPROVEMENT

© Copyright: 2021 Guangzhou JST Seals Technology Co., Ltd. All Rights Reserved.

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