Hebei Jinwo Machinery Technology Co., Ltd. is one of the leading manufacturers and suppliers of ptfe back-up ring in China. With abundant experience, we warmly welcome you to buy bulk durable ptfe back-up ring in stock here from our factory. All customized products are with high quality and competitive price. Contact us for quotation.
The PTFE Back-Up Ring is a high-performance sealing element designed to prevent O-ring extrusion in high-pressure hydraulic and pneumatic systems. Made from chemically inert polytetrafluoroethylene, it offers a near-zero friction coefficient and exceptional thermal stability, ensuring long-term drivetrain protection and reliable sealing in the most aggressive chemical environments.
Essential Fitment & Specs
|
Parameter |
Specifications |
|
Material Type |
Virgin PTFE (White) |
|
Temperature |
-200℃ to +260 ℃ |
|
Material |
High-Performance NBR/FKM with Reinforced Steel Case |
|
Color |
White |
|
Media |
All Chemicals, Oils, Steam |
|
Speed |
<= 5 m/s |
|
Standards |
AS568 / ISO 3601 / JIS |
|
Working Pressure |
<= 40 MPa |
|
Hardness |
55-65 Shore D |
|
Size |
Full Range Metric & Inch |
|
Cut Type |
Scarf Cut (Split) |
|
Function |
Extrusion Protection & Friction Loss |
Material Excellence & Features
The PTFE Back-Up Ring is the industry standard for applications requiring maximum chemical compatibility and low-friction performance.
Fabricated from premium virgin PTFE, this back up ring seal offers a near-zero coefficient of friction, which prevents heat build-up and stick-slip during hydraulic cylinder operation.
Its incredible thermal stability allows it to remain functional in cryogenic temperatures as low as -200°C while resisting deformation at high heat.
For even more demanding environments, we also provide PEEK Backup Rings known for extreme mechanical strength.
The scarf-cut design of each hydraulic backup ring facilitates easy installation onto existing shafts without requiring full teardown of the assembly.
Industry Applications & Compatibility
These rings are extensively utilized in chemical dosing pumps and food processing equipment due to their non-reactive nature and compliance with high purity standards.
In general hydraulic systems, our metric backup rings provide essential support to O-rings, ensuring they remain seated and undamaged during high-frequency pressure oscillations.
Automotive fuel injection systems and laboratory instrumentation rely on these components to maintain a perfect seal against aggressive solvents and various synthetic fluids.
The maritime industry adopts these PTFE solutions for deck machinery and valve controls where saltwater corrosion and extreme weather fluctuations are constant factors.
Why Choose Us
Jinwo specializes in precision-machined PTFE solutions, providing high-volume manufacturing capacity that ensures consistent quality and competitive pricing for B2B distributors worldwide.
Our comprehensive back up ring catalogue offers a variety of dimensions and materials to suit any industrial requirement. Our production facility utilizes advanced CNC technology to guarantee exact tolerances, ensuring each PTFE Back-Up Ring integrates seamlessly with standard O-ring groove dimensions.
We maintain a robust supply chain with a massive inventory of standard sizes, enabling rapid dispatch to minimize downtime for your critical repair operations.
Our technical experts are available to provide comprehensive material cross-referencing and engineering support, helping you select the optimal sealing configuration for your specific environmental challenges.
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