S-95630A872 0.125" ID x 0.312" OD Plastic Washers

Key Features & Benefits at a Glance

• Exceptional thermal resistance up to 500°F (260°C) for reliable performance in high-heat industrial environments
• Superior chemical inertness of PTFE material prevents corrosion and degradation from harsh chemicals and solvents
• Excellent electrical insulation properties provide safe operation in electrical applications and prevent current leakage
• Precision dimensional fit with 0.125" ID and 0.312" OD ensures proper seating and distribution for No. 4 screws
• Consistent hardness rating (Durometer 55D) maintains structural integrity under compression and vibration
• Regulatory compliance assurance with RoHS 3 and REACH standards for global market acceptance and environmental safety
• Ultra-thin profile (0.025-0.040" thickness) enables space-saving installations without compromising performance

Professional Applications & Engineering Value

This PTFE plastic flat washer delivers critical engineering solutions where conventional materials fail. The PTFE (Teflon) construction provides unmatched chemical resistance against acids, bases, and solvents while maintaining dimensional stability across extreme temperature ranges from cryogenic to 500°F. In high-temperature applications such as chemical processing equipment, aerospace components, and electrical enclosures, these flat washers serve as reliable sealing and insulation elements that prevent galvanic corrosion, reduce friction, and maintain bolt tension under thermal cycling. The white PTFE material offers excellent identification in complex assemblies and meets stringent purity requirements for semiconductor, food processing, and pharmaceutical industries where contamination control is paramount.

Specification Summary & Compliance

This inch-system flat washer features precise dimensions of 0.125" inner diameter and 0.312" outer diameter with thickness ranging 0.025-0.040", specifically engineered for No. 4 screw applications. Manufactured from premium PTFE plastic with Durometer 55D hardness rating, the component ensures consistent performance under compression. The product fully complies with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations concerning chemical substances, making it suitable for global industrial markets with stringent environmental and safety requirements.