S-91195A111 0.325" ID x 1" OD Washdown Bonded Sealing Washers

Key Features & Benefits at a Glance

• Exceptional temperature resilience for reliable performance in environments ranging from -100°F to 400°F, preventing seal failure under thermal stress.
• Superior sealing integrity with bonded silicone rubber (Durometer 50A) that maintains flexibility and creates a tight barrier against fluids and gases up to 100 psi.
• Enhanced corrosion resistance due to the 18-8 stainless steel construction, ideal for harsh industrial or outdoor settings.
• Optimized fit and durability with precise 0.325" ID and 1" OD dimensions, ensuring secure placement on 5/16" screws and reducing assembly errors.
• Long-term chemical and mechanical stability from the Rockwell B80 hardness metal base, resisting deformation under load.
• Compliance with stringent regulations including RoHS 3 and REACH, making it suitable for global supply chains and sensitive applications.
• Easy identification and application with a distinct green seal color, streamlining inventory management and installation processes.

Professional Applications & Engineering Value

This metal bonded washer is engineered to address critical sealing challenges in demanding industrial environments. The combination of 18-8 stainless steel and a silicone rubber seal provides a robust solution for applications exposed to extreme temperatures, chemicals, and pressure variations. It effectively prevents leaks in fluid and gas systems—such as hydraulic assemblies, HVAC units, and automotive components—where standard washers may degrade. The bonded design ensures the seal remains intact under vibration and thermal cycling, reducing maintenance downtime and enhancing system reliability. By integrating high temperature resistance and chemical resilience, this washer supports long-term performance in aerospace, manufacturing, and energy sectors, delivering consistent sealing without compromising structural integrity.

Specification Summary & Compliance

This washer features an ID of 0.325", OD of 1", and thickness range of 0.047-0.109", designed for 5/16" screw sizes with precise dimensional tolerances. It is manufactured from 18-8 stainless steel with a hardness of Rockwell B80 and a silicone rubber seal rated at Durometer 50A. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use. Its performance is validated for temperatures from -100°F to 400°F and maximum pressures of 100 psi for both fluids and gases.