English
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 SealsItem NO.:
DQQ/DQKPayment:
T/TProduct Origin:
ChinaShipping Port:
GuangzhouOrder(MOQ):
50PEEK 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. |
| 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
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.
Categories
DKBI wipers are installed in the sealing configurations of hydraulic cylinders to prevent contaminants such as dirt, dust and moisture from entering the cylinder as they retract back into the system.
JST FHR series is made of a helical wound spring and a polymer jacket, which is mainly used for rod.
JST FHP series is made of a helical wound spring and a polymer jacket, which is mainly used for piston.
JST's RGD (Rapid Gas Decompression) o ring can be applicated in high and low temperature environment with high pressure. It is widely used in detection and drilling equipment, completion equipment, underwater valves and pumps, compressor ect.
ptfe wear strips can keep the piston centered as well as preventing metal-to-metal contact.
Wipers are installed in the sealing configurations of hydraulic cylinders to prevent contaminants such as dirt, dust and moisture from entering the cylinder as they retract back into the system.
JST's back up ring compensate for large temperature fluctuations. Using Back-up Rings allows O-Rings to be utilized in higher pressure applications, where larger extrusion gaps are required and where there are reciprocating or rotating movements. Back-up Rings are protective and supporting elements with no sealing function. The back up ring material could be PEEK, modified PTFE.
The oil scraper ring is a part located at the rear of the pump packing seal.
For inquiries about our products or pricelist, please leave to us and we will be in touch within 24 hours.
No. 1, Xinyu North Road, Ningxi Street, Zengcheng District, Guangzhou, China 511340
© Copyright: 2026 Guangzhou JST Seals Technology Co., Ltd. All Rights Reserved.
Friendly Links:
VonesealsScan to wechat
