S-91195A128 0.485" ID x 1" OD Washdown Bonded Sealing Washers

Key Features & Benefits at a Glance

• Superior sealing performance with permanently bonded silicone rubber that prevents fluid and gas leaks up to 100 psi
• Exceptional temperature resistance maintains seal integrity in extreme environments from -100°F to 400°F
• Corrosion-resistant 18-8 stainless steel construction ensures long-term durability and reliability in harsh industrial settings
• Precision fit for 1/2" screws with 0.485" ID and 1" OD dimensions for secure, vibration-resistant fastening
• Dual-material hardness optimization combines Rockwell B80 metal hardness with Durometer 50A silicone for optimal compression and recovery
• Full regulatory compliance meets RoHS 3 and REACH standards for safe use in regulated industries
• Visual seal identification with green silicone rubber for easy inspection and quality control during installation

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these metal bonded washers solve critical sealing challenges in extreme environments. The 18-8 stainless steel washer body provides structural integrity and corrosion resistance, while the permanently bonded silicone rubber seal creates a reliable barrier against fluids and gases. This combination is particularly valuable in high-temperature applications ranging from cryogenic conditions to elevated thermal environments, maintaining seal performance where conventional washers would fail. The bonded construction eliminates separation issues common in assembled seals, ensuring consistent performance in pressure systems, chemical processing equipment, and industrial machinery where leak prevention is critical for operational safety and efficiency.

Specification Summary & Compliance

This metal bonded washer features precise dimensional specifications with 0.485" ID and 1" OD for 1/2" screw applications, manufactured to industrial standards for consistent performance. The assembly combines 18-8 stainless steel (Rockwell B80 hardness) with silicone rubber seal (Durometer 50A) to withstand operational pressures up to 100 psi for both fluids and gases. Product compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial use across multiple sectors.