Oil and gas seal
Products
Home Products

Hydraulic Seal

Back-up Ring

PEEK PTFE POM back up ring

PEEK PTFE POM back up ring

Back-up Ring/Anti Extrusion Rings is a ring that holds an elastomeric seal to its outline shape and in its right place. and are typically used with O Rings to eliminate extrusion at high pressures.

  • Brand:

    JST Seals
  • Item NO.:

    DQQ/DQK
  • Payment:

    T/T
  • Product Origin:

    China
  • Shipping Port:

    Guangzhou
  • Order(MOQ):

    50
  • Product Detail

PEEK PTFE POM back up ring


Back-up Ring/anti extrusion back up rings are a ring that holds an elastomeric seal to its outline shape and in its right place. and back up ring seal is typically used with O Rings to eliminate extrusion at high pressures.


Peek backup rings are protective and supporting elements made of anti extrusion materials, usually with rectangular cross-section. They are installed in grooves together with elastic seals. In static applications, elastic seals are preferably equipped with corresponding O-rings. Because the backup rings fit closely with the housing, they prevent the pressurized elastic seal from squeezing into the sealing gap.


PEEK is a semi-crystalline, show high stiffness and hardness, has an unique high tensile strength and fatiue strength, Resistant to high-engery radiation, high abrasion and wear resistant, good electrical insulator even at high voltages, and is characterised mainly by its very good mechanical properties and exceptional dimensional stability even continous operation at high temperatures of up to 250°C.


Our backup rings are made of pure PTFE, filled PTFE or peek, depending on the application.


Advantages:

1. Quick and easy installation.
2. Reduces friction by trapping lubricants.
3. Easily stretchable.
4. Contact with all surfaces under high pressure, eliminating wear spots.
5. Durable materials.


Working Conditions
Material PEEK PTFE POM
Pressure ≤310Mpa ≤69Mpa ≤103Mpa
Temperature  -60℃ to +200℃ -46℃ to +180℃ 0℃ to +110℃
Medium Most of the chemicals, except Strong nitric acid and concentrated sulfuric acid. Most of the chemicals, except molten sodium and liquid fluorine. Most of the chemicals, not suitable for acid,Strong Alkali, UV etc enviroment.


Size:

Diameter:φ3-φ500mm
PTFE backup ring's Dimension can be customized

Send A Message

If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Related Products
Secondary BT seal supplier
Casing secondary BT seal

BT Seal is a static seal that is used to seal rough casing and tubing. It is constructed from an elastomer with anti-extrusion spring bonded within it. Springs are available in stainless steel, elastomer could be HNBR or NBR.

Hydraulic Seal Manufacturers
Double acting PTFE piston seals

XTP is Double acting piston seals, composed of PTFE piston sealing ring, O-ring and X ring, and is used for the piston bidirectional seal of hydraulic cylinder. Especially suitable for separating two different mediums.

Phenolic wear ring catalogue
WR phenolic resin wear ring

Phenolic wear rings are designed with tubing made from fine weave cotton fabric wound on molds and imbued with phenolic resin. It has high mechanical properties, good oil resistance, low water absorption and high wear resistance.

PTFE spring energized lip seals
Helical spring energized seals for oil and gas application

The FDB seal is made of a helical wound spring and a polymer jacket, It is the best choice for vacuum, gas and low-temperature flange sealing applications.

swivel joint plug types
High pressure swivel joint ball plug

Swivel joint ball plug is working together with hammer union seals, to seal the balls of high pressure elbows and grease.

Valve inserted seal
Valve insert seal for frac pump

The JST valve insert seal is mainly used for sealing valve seat of fracturing pump. It is made of modified polyurethane material of excellent extrusion resistance, puncture resistance and fatigue resistance, which guarantees the fracturing work under various working conditions.

Well service packing
Fabric reinforced well service packing

EVZ is commonly used in high-pressure mud pumps and fracturing pumps, namely Packings, the high-speed reciprocating dynamic seals.

HNBR Centralizer fins design
Downhole MWD centralizer rubber fins

JST's centralizer rubber fins is made according to customer requirements. The centralizer fin has a retrievable, reseatable, flexible design. This Rubber and metal reinforced rubber centralizer fins are available for a variety of MWD (measurement while drilling) tools and oil well logging and monitoring instruments.

© Copyright: 2025 Guangzhou JST Seals Technology Co., Ltd. All Rights Reserved.

粤ICP备12032262号 IPv6 network supported

IPv6 network supported

top

Send A Message

Send A Message

    If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

  • #
  • #
  • #