Oil Scraper Rings

Our oil scraper rings are engineered to provide a positive seal against the piston rod, effectively stripping the oil film and directing it back into the crankcase. This is critical for maintaining the integrity of “oil-free” gas streams and preventing carbon buildup on valves.

Material Selection

We specialize in four core materials designed to withstand the most demanding industrial conditions:

• Carbon Fiber Filled PTFE (PTFE + CF): Offers the highest mechanical strength and wear resistance among PTFE grades. Ideal for high-pressure applications where dimensional stability is critical.

• Graphite Filled PTFE (PTFE + Graphite): Provides excellent self-lubricating properties and low friction. This is the gold standard for PTFE filled oil scraper rings in non-lubricated or “dry” service.

• Carbon Graphite: A versatile, self-lubricating material with high thermal stability. Perfect for standard gas compression where reliability and long service life are required.

• Antimony Impregnated Graphite: Designed for extreme duty. The antimony impregnation significantly enhances hardness and strength, making these carbon graphite oil scraper rings ideal for high-pressure, high-temperature, and vacuum environments.

Technical Engineering & Design

• Segmented Construction: Precision-machined with radial or tangential cuts to maintain perfect 360° contact with the rod.

• Garter Spring Actuation: High-tension stainless steel springs ensure consistent scraping pressure, extending service life up to 25,000 hours.

• Rod-Friendly Materials: Our composites (PTFE/Graphite) are designed to be softer than the piston rod, ensuring zero scoring or damage to expensive shaft surfaces.

• Installation Standards: Designed for easy assembly; ensure the scraping edge faces the crankcase and joints are staggered (90°/180°) to eliminate leak paths.

Why Total Oil Control Matters

• Uncompromised Gas Purity: Critical for oxygen service, chemical processing, and “oil-free” requirements where contamination is a safety risk.

• Component Protection: By keeping the compression chamber clean, the oil scraper rings prevent premature wear of rod pressure packing and piston rings.

• Operational Safety: Effectively prevents hazardous oil-gas mixtures and carbon buildup on valves.

Industry Applications

Our rings are compatible with high-pressure hydrogen, CO2 compressors, and specialized machinery across:

• Energy & Petrochemical: Oil refining and natural gas gathering.

• Manufacturing: PET bottle blowing, coal mills, and dyeing machines.

• Specialty Equipment: Reciprocating vacuum pumps and industrial blowers.

Contact us today for a technical consultation or a fast quote.