PTFE Rings — Piston Rings, Guide Rings & Back-Up Rings
Technical Specification
| Types: | Piston rings, rider/guide rings, wear rings, back-up rings (spiral, solid and split), seal rings |
|---|---|
| Grades: | Virgin PTFE, glass-filled, carbon/graphite-filled, bronze-filled, MoS2-filled |
| Sizes: | Machined to your diameters and cross-section |
| Applications: | Compressors, hydraulic and pneumatic cylinders, pumps and valves |
| Note: | Figures are typical; confirm exact grade, size and rating with our team |
Ring Types We Supply
- Piston rings: for non-lubricated and lubricated compressors
- Guide / wear rings: keep pistons and rods centred and prevent metal-to-metal contact
- Back-up rings: stop O-rings extruding under high pressure
- Seal rings: static and dynamic sealing in valves and pumps
Choosing a Ring Grade
- Carbon / graphite filled: dry-running compressor piston and rider rings
- Bronze filled: hydraulic guide rings and high-load wear rings
- Glass filled: general wear and back-up rings with good chemical resistance
- Virgin PTFE: back-up rings and seals in aggressive chemicals
Information to Send
- Ring type and drawing, or inner diameter, outer diameter and width
- Split, scarf-cut or solid
- Medium, temperature, pressure and speed
- Quantity
See also: PTFE Wear Strips & Guide Strip, PTFE Machined Components, Seals and Rings, the PTFE Grades Guide and our PTFE & Filled PTFE Technical Data Sheet (PDF).
Send us your drawing or sizes, the grade, quantity and service conditions, and our Al Khobar team will confirm availability, lead time and a quotation for delivery anywhere in Saudi Arabia and the GCC. Every order is supplied with a Material Test Certificate.
Frequently Asked Questions
Q1. Which PTFE grade is best for compressor piston rings?
A. Carbon or graphite-filled PTFE is the usual choice for dry-running compressor rings.
Q2. What does a back-up ring do?
A. It supports an O-ring and stops it extruding into the clearance gap under high pressure.
Q3. Which PTFE grade is used for hydraulic guide rings?
A. Bronze-filled PTFE, because of its high load capacity and heat transfer.
Q4. Can you make rings to my sizes?
A. Yes. Rings are machined to your drawing or dimensions.
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