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JST Sealing Solutions
Domicile JST Sealing Solutions
About JST Seals
JST Seals is a leading manufacturer of high-performance seals for countless industries including construction, oil and gas, semiconductor, LNG, wind power, chemistry, coal mining, medical equipment and others. We aim high and look far, providing professional and reliable sealing solutions for particular harsh applications.
 
JST Seals has over 30 years of sealing manufacturing experience, covering:

• API 6A gate valve seal

• API 6A wellhead equipment seal

• Downhole packer element

• Downhole seal stack

• Well service pump packing

• Hammer union seal

• API 6D ball valve and LNG Seal
Good records in Quality & Delivery. 
Fast Response & Reliable Services.
MFG & Test Automation. Smart MFG Systems.PLM (Product Lifecycle Management) system.

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API 6A & High-Performance Valve Seals

• Certified sealing solutions for critical applications:

Seat seals and stem packings tested to API 6A PR2/PR2F standards.

• Performance Ratings:

Material: FF/HH | Temperature: L-X, K-X, K-400°F | Pressure: Up to 30,000 psi.

Applications: Frac valves, gate valves, ball valves, choke valves, fire-safe stem packing, thermal recovery.

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Wellhead Sealing Solutions

• API 6A fluid immersion & RGD-certified wellhead casing seal materials.

• Wide range of sealing solutions: FS seals, S seals, P seals, T seals, Lockdown screw packing, Metal end cap seals, Slip pack off seals, Dovetail, etc.

• High-performance materials: NBR, HNBR, FKM, Aflas, FFKM, PTFE, PEEK, Stainless steel/Inconel spring, Wire mesh, Copper.

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Downhole Tool Sealing Solutions

• Provide the best sealing type and material for various oil and gas drilling and exploration applications to maximize the life and performance of the sealing system. NBR, HNBR, FKM, Aflas, FFKM, PTFE, PEEK materials are widely used in downhole.

• Packer elements and sliding sleeve seal stacks have been installed in the 7" packers and successfully passed the API 11D1 V0 test.

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Subsea Sealing Solutions

• First Chinese company to apply subsea Christmas tree seals and achieve API 17D certification.

• Long-lifecycle, high-safety sealing solutions for:

Subsea equipment – Christmas tree valves, tubing hangers, choke valves.

SCM hydraulic control units – Pipelines and fluid connectors.

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Well Service Equipment Seals

• High-performance seals for high-pressure and abrasive drilling, cementing, and fracturing.

• Pump packings tested in continuous fracturing for 11 wells under 175MPa high sand conditions.

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