Teflon O-Ring
- Peflon provides a full range of Teflon O-rings for chemical and high-temperature sealing.
- Standard sizing to AS568 (SAE / JIS B 2401), ISO 3601 and JIS B 2401.
- OEM / ODM available from your drawing, photo, or even an idea.
- Food-grade PTFE O-rings can meet FDA, USDA and 3-A dairy requirements.
What is a Teflon O-Ring
A Teflon O-ring is produced by molding, CNC machining, encapsulation, coating or extrusion. A PTFE O-ring can work continuously from +327°C down to −268°C and is chemically resistant and non-compressible. Some applications need a modified PTFE material to improve mechanical strength, stability and wear resistance, so Peflon also uses filled PTFE grades such as glass fiber, carbon, graphite, molybdenum disulfide and bronze to meet any custom request. The base resin, PTFE (CAS 9002-84-0), is a fluoropolymer commercialized by upstream producers such as Daikin.
Types of Teflon O-Ring by Material
We choose different materials and designs to meet requests across every industry: coated, modified, FKM, FFKM, encapsulated and fluorosilicone O-rings. If no standard type fits your needs, get in touch and we will customize.
Virgin Teflon O-Ring
100% virgin PTFE for maximum chemical inertness and the full −268°C to +327°C service range in aggressive media.
PTFE Coated O-Ring
An elastomer core with a bonded PTFE coating that adds resilience while keeping a low-friction, non-stick sealing face.
FFKM O-Ring
Perfluoroelastomer O-rings for the most demanding chemical and high-temperature seals, pairing rubber-like recovery with near-PTFE resistance.
FKM Teflon O-Ring
Fluoroelastomer (FKM) O-rings for oil, fuel and high-temperature service where a resilient, cost-effective fluoro seal is required.
PFA Encapsulated O-Ring
A silicone or FKM core fully jacketed in seamless PFA for elastomer resilience plus PTFE-grade chemical and temperature resistance.
FEP Encapsulated O-Ring
A resilient core sealed inside a seamless FEP jacket, delivering broad chemical resistance for FDA and pharmaceutical sealing.
Teflon O-Ring Specifications & Standards
| Property | Specification |
|---|---|
| Dimensional standards | AS568 (SAE / JIS B 2401), ISO 3601, JIS B 2401 |
| Service temperature | −268°C to +327°C (virgin PTFE) |
| Base materials | Virgin PTFE and filled PTFE (glass fiber, carbon, graphite, molybdenum disulfide, bronze) |
| Encapsulated types | FEP or PFA jacket over a silicone or FKM elastomer core |
| Compliance | Food-grade grades meet FDA 21 CFR 177.1550, USDA and 3-A dairy requirements |
| Customization | OEM / ODM from your drawing, sample photo, or design concept |
Teflon O-Ring FAQ
What temperature range can a Teflon O-ring handle?
A virgin PTFE O-ring works continuously from −268°C up to +327°C, which is well beyond the range of most conventional elastomer O-rings. FEP- or PFA-encapsulated types are limited by their fluoropolymer jacket rating.
How do I select the right Teflon O-ring size?
Size to the AS568 (SAE / JIS B 2401), ISO 3601 or JIS B 2401 standard for off-the-shelf dimensions. For non-standard grooves, send us a drawing, sample or the cross-section and inner diameter and we will build it to your specification.
What is the difference between a solid PTFE O-ring and an encapsulated O-ring?
A solid PTFE O-ring is fully inert but has limited elastic recovery. An FEP- or PFA-encapsulated O-ring wraps a silicone or FKM elastomer core in a seamless fluoropolymer jacket, adding the spring-back of rubber while keeping a chemically resistant PTFE-family sealing surface.
Are your Teflon O-rings food-grade and FDA compliant?
Yes. We offer food-grade PTFE O-rings formulated to meet FDA 21 CFR 177.1550, USDA and 3-A dairy requirements for food, dairy and pharmaceutical contact.
Can you supply custom or filled PTFE O-rings?
Yes. We provide OEM / ODM O-rings and filled PTFE grades using glass fiber, carbon, graphite, molybdenum disulfide or bronze to improve mechanical strength, wear resistance and dimensional stability for demanding applications.
Related Products
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Request a Teflon O-Ring Quote
Whether you need a standard AS568 size, an encapsulated O-ring, or a fully custom filled-PTFE design, send us your requirements and you will get a complete sealing solution.