S-96371A206 0.375" ID x 0.75" OD Plastic Sealing Washers

Key Features & Benefits at a Glance

• Exceptional temperature resilience for reliable performance in environments ranging from -200°F to +400°F, preventing material failure under extreme thermal cycling
• Superior chemical resistance thanks to ePTFE construction, ensuring longevity and integrity when exposed to harsh industrial chemicals and solvents
• Consistent load distribution with precise 3/8" ID and 0.75" OD dimensions, reducing stress concentrations and preventing fastener loosening in 3/8" screw assemblies
• Optimal sealing and vibration dampening from the 0.035-0.070" thickness and Durometer 40A hardness, providing a soft yet durable barrier that maintains seal integrity
• Environmental and regulatory compliance with RoHS 3 (2015/863/EU) standards, making them safe for use in regulated industries and electronic applications
• Non-corrosive and electrically insulating properties ideal for preventing galvanic corrosion and electrical short circuits in sensitive equipment
• Easy identification and aesthetic consistency with uniform white color, simplifying inventory management and ensuring a clean, professional appearance in finished assemblies

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these ePTFE plastic flat washers deliver critical performance where temperature extremes and chemical exposure compromise standard components. The expanded PTFE material maintains structural integrity from cryogenic conditions up to 400°F, eliminating risks of melting, embrittlement, or deformation. This makes them indispensable in chemical processing equipment, aerospace assemblies, and high-temperature machinery where thermal stability is non-negotiable. Their inherent chemical resistance ensures they won't degrade when contacting aggressive fluids, while the precise inch-system dimensions (0.375" ID, 0.75" OD) guarantee perfect fit with 3/8" screws, providing uniform clamping force and reducing maintenance cycles in vibration-prone applications.

Specification Summary & Compliance

This flat washer conforms to standard inch-system sizing with an internal diameter of 0.375" (3/8"), external diameter of 0.75", and thickness range of 0.035-0.070". Material hardness is specified as Durometer 40A, ensuring consistent compressibility and seal performance. The product is manufactured in compliance with RoHS 3 (2015/863/EU) regulations, confirming the absence of restricted hazardous substances. Suitable for screw size 3/8", these washers operate reliably across the full temperature range of -200°F to +400°F without loss of mechanical properties.