This Teflon (PTFE) O-ring is engineered for fuel injector applications that standard rubber seals can't handle. PTFE resists acids, bases, oils, steam, and aggressive chemicals, and stays stable from -100°F to +500°F (-73°C to +260°C) with no decomposition even at 260°C. Fits Bosch and universal-style fuel injectors and is the recommended seal for ethanol- and methanol-blended fuel systems where standard Buna-N or Viton O-rings degrade quickly. Shore D 55 durometer, white PTFE compound.

Unmatched Chemical & Temperature Resistance for Extreme Fuel Injector Applications

When your Fuel Injector demands exceptional chemical resistance, high heat stability, and low friction, PTFE (Polytetrafluoroethylene) O-Rings provide an unparalleled solution. PROCHARGE offers precision-cut, White PTFE Fuel Injector O-Rings designed for the most demanding environments.

Unlike traditional elastomers, PTFE O-Rings do not compress easily, making them ideal for dynamic and extreme chemical exposure applications. They are the most chemically inert O-Ring material available, resistant to acids, bases, oils, steam, and aggressive chemicals. Their exceptional wear and abrasion resistance make them ideal for valves, mass spectrometer probes, and sliding applications.

Chemical Resistance

Resistant to: METHANOL

• Acids and bases (sulfuric, hydrochloric, nitric, sodium hydroxide, etc.)
• Oils, greases, and petroleum-based fluids
• Steam and hot water
• Chlorinated and aromatic solvents
• Alcohols, ketones, and ethers
• Hydraulic fluids and lubricants
• Extreme chemical exposure environments

Thermal & Dielectric Properties
PTFE is one of the most thermally stable plastic materials available. At 260°C (500°F), it maintains nearly all of its original properties, ensuring reliable sealing performance. Its dielectric properties make it an excellent insulator, while its low thermal conductivity enhances sealing efficiency.

Technical Specifications - AKA Teflon® O-Rings

• Material: PTFE (Polytetrafluoroethylene)
• Durometer (Hardness): 55 Shore D
• Color: White
• Operating Temperature: -100°F to +500°F (-73.3°C to +260°C)
• Thermal Stability: No decomposition at 260°C (500°F), minor decomposition above 400°C (932°F)
• Low Friction Coefficient: Excellent for sealing moving surfaces
• Tear & Abrasion Resistance: Exceptional