Our PTFE O-Ring is manufactured with custom PTFE formulations tailored to your specific temperature, pressure, and chemical requirements. They offer a hardness range from 60 to 90 JIS Hs, excellent compression set and recovery for long-term sealing reliability, and are available in both standard and non-standard sizes, including large-diameter O-rings. All products are compliant with common industrial standards and suitable for OEM applications.
PTFE O-Ring is widely used in chemical processing equipment and reactors, oil & gas pipelines, valves and pumps, food & beverage systems, water treatment and steam systems, hydraulic and pneumatic components, as well as general industrial machinery and OEM assemblies. For more industry-specific solutions, please visit our applications page.
Depending on the selected compound, our PTFE O-Ring can operate within a temperature range of -50°C to +250°C and a pressure range of 0 to 35 MPa. They are suitable for strong caustics, moderate acids, chlorine, gases, water, steam, hydrocarbons, hydrogen, and aluminum fluoride — except elemental fluorine and molten sodium.
The table below shows typical physical properties under standard test conditions.
| Property | Unit | A | B | C |
|---|---|---|---|---|
| Hardness | JIS Hs | 70-90 | 70-90 | 60-75 |
| Elongation, min | % | 60 | 60 | 80 |
| Tensile Strength, min | MPa | 16 | 16 | 16 |
| Compressibility | % | 50-60 | 50-60 | 60-75 |
| Recovery | % | >85 | >85 | >70 |
| Permanent Set | % | <10 | <10 | <20 |
Tested at 230
× 24h hot air ageing.
| Property | Unit | A | B | C |
|---|---|---|---|---|
| Change of Hardness, max | JIS Hs | -5-+5 | -5-+5 | -5-+5 |
| Change of Tensile Strength, max | % | -15 | -15 | -15 |
| Change of Elongation, max | % | -20 | -20 | -20 |
Tested at 175 × 70h.
| Property | Unit | A | B | C |
|---|---|---|---|---|
| Compression Permanent Set | % |
 20
|
20
|
30
|
| Colour | - | blown | black | red |
We supply PTFE O-Ring in a wide range of section diameters and nominal inside diameters. Custom sizes are available on request.
| Section Diameter | Nominal Inside Diameter | Section Diameter | Nominal Inside Diameter |
|---|---|---|---|
1.80 0.10
|
200.10-3001.60
|
6.000.13
|
800.80-4002.00
|
|
2.600.10
|
200.15-3001.60
|
6.300.14
|
800.80-4002.00
|
|
3.550.10
|
250.15-3001.60
|
7.000.14
|
1000.65-10004.00
|
|
4.000.10
|
400.20-3001.60
|
8.000.16
|
1101.00-20004.00
|
|
4.600.10
|
400.20-3001.60
|
10.000.18
|
2001.50-20006.00
|
|
5.000.10
|
400.25-4001.80
|
12.000.18
|
 4001.50-6.00
|
|
5.300.13
|
600.30-4001.80
|
14.000.18
|
4001.50-6.00
|
|
5.500.13
|
600.30-4001.80
|
16.000.18
|
4001.50-6.00
|
|
5.700.13
|
600.30-4002.00
|
- | - |
We can produce other non-nominal PTFE O-Ring. Custom sizes, materials, hardness, and colours are available on request. Please provide your drawing, dimensions, or operating conditions for a fast quotation. You may also send an inquiry directly to our sales team.
A PTFE O-Ring is a sealing ring made from polytetrafluoroethylene, designed to provide reliable sealing under specific temperature, pressure, and chemical conditions.
We offer virgin PTFE, modified PTFE, and filled PTFE compounds such as carbon-filled, glass-filled, and bronze-filled grades. The choice depends on your operating environment. For more options, please see our PTFE sheet range.
Yes. We produce both standard and non-standard PTFE O-Ring, including large-diameter and non-rounded shapes.
Depending on quantity and material, lead time varies. Please send your inquiry for a specific quotation.
To help you choose the right sealing solution, the table below compares PTFE O-Ring with common alternative sealing materials across key performance criteria.
| Property | PTFE O-Ring | NBR O-Ring | FKM O-Ring | Silicone O-Ring |
|---|---|---|---|---|
| Chemical Resistance | Excellent | Fair | Good | Fair |
| Temperature Range | -50°C to +250°C | -30°C to +100°C | -20°C to +200°C | -50°C to +200°C |
| Coefficient of Friction | Very Low | Medium | Medium | Medium |
| Compression Set | Good | Good | Excellent | Good |
| Abrasion Resistance | Good | Good | Good | Fair |
| Suitable for Food & Beverage | Yes (FDA grades) | Limited | Limited | Yes |
| Typical Applications | Chemical, oil & gas, food | General industrial | Automotive, aerospace | Medical, food |
Key advantages of PTFE O-Ring:
• Superior chemical resistance against almost all industrial chemicals, except elemental fluorine and molten sodium.
• Very low coefficient of friction, ideal for dynamic sealing applications where stick-slip must be avoided.
• Wide operating temperature range from -50°C to +250°C, suitable for extreme environments.
• Available in virgin, modified, and filled compounds to match specific pressure and wear requirements.
• Custom sizes and large-diameter options available for OEM and replacement applications.
For more information about related sealing products, please review our PTFE gaskets, PTFE sheet, and PTFE parts, or send an inquiry to our sales team for a fast quotation.
Address
No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
