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PTFE Universal Seal

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PTFE Universal Seal

Features
The pure PEEK piston seal is a high‑performance dynamic/static sealing solution composed of a polymer ether ketone (PEEK) sealing ring and a metal energy‑storing spring. Leveraging the excellent properties of PEEK—such as high‑temperature resistance, rigidity, chemical corrosion resistance, and compensation resistance—this seal effectively addresses the common issues of deformation, wear, and sealing failure faced by traditional seals under high‑temperature, high‑speed, and harsh‑medium temperature range.
The product features a wide operating temperature range, capable of stable long‑term performance from ‑60 ℃ to 260 ℃, with short‑term tolerance up to 300 ℃. It can withstand maximum pressure up to ≤70 MPa. For dynamic applications, reciprocating speeds up to 10 m/s, rotating speeds ≤5 m/s. It exhibits outstanding resistance to extrusion and deformation under most acids, alkalis, organic solvents, and high‑pressure steam media, along with excellent anti‑aging, hydrolysis resistance properties.
Widely used in petrochemicals, semiconductor electronics, medical and food processing, aerospace, and high‑pressure‑high‑equipment equipment, this seal represents an ideal solution for ultra‑high‑pressure, high‑temperature, and high‑cleanliness applications.

Testing items
Technical parameters
Notes
Sealing body material
Pure peek polyetheretherketone
The spring can be made of 304/316 stainless steel, Hastelloy alloy, Inconel alloy
Operating temperature range
‑60℃‑260℃(long‑term)‑short‑term peak:300℃
It has excellent resistance to brittle fracture at low temperatures, resistance to long‑term temperature deformation, and stable shape
Maximum applicable pressure
≤70MPa
It has excellent self‑lubricating wear resistance, suitable for high‑speed dynamic seal
Adaptable movement speed
Reciprocating motion ≤10 m/s, Rotating motion ≤ 5 m/s
It has low friction loss and protects the main shaft surfaces
Chemical resistance performance
Resistant to most acids, bases, salts, hydrocarbons, organic solvents, high‑pressure steam; not resistant to fuming sulfuric acid, nitric acid, etc., strong oxidizing media
It has excellent resistance to hydrolysis and remains stable in high‑temperature water media for a long time
Material hardness
Shore D85‑90
It has high rigidity and resistance to permanent compression deformation
Cleanliness level
Compliant with FDA food contact standard and ISO medical clean requirements
Low particle outgassing, suitable for semiconductor, and aeroscope
Sealing application type
Pushing shaft seal, rotating shaft seal, end face static seal
For wear‑gap adjustment, automatic wear compensation
Dry friction coefficient
0.2‑0.3
It has low friction loss and protects the main shaft surfaces
Adaptable common media
Hydraulic oil, inert gas, fuel gas, pure water, chemical fluids, medical media
Widely used in petroleum, semiconductor, medical, aerospace

  • PTFE Universal Seal
    PTFE Universal Seal
  • PTFE Universal Seal
    PTFE Universal Seal
  • PTFE Universal Seal
    PTFE Universal Seal
  • PTFE Universal Seal
    PTFE Universal Seal
about us
About Jiaxiang

Zhejiang Jiaxiang Fluoroplastics Co., Ltd. is a professional solution provider of fluoroplastics and high-performance engineering plastics. Our core products cover a full range of fluororesins and high-performance engineering plastics including PTFE, PFA, FEP, PEEK, PI, PVDF, as well as customized processed products, which are widely used in global high-end manufacturing fields such as semiconductor, hydrogen energy, aerospace, automotive, petrochemical, environmental protection, and medical.

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