S-91195A133 0.325" ID x 1.5" OD Washdown Bonded Sealing Washers

Key Features & Benefits at a Glance

• Exceptional Temperature Resistance: Maintains sealing integrity across extreme environments from -100°F to 400°F, preventing failure in thermal cycling applications
• Reliable Dual-Material Construction: 18-8 stainless steel bonded with silicone rubber creates a permanent seal that outperforms separate gasket/washer combinations
• Optimized Pressure Performance: Withstands up to 100 psi for both fluids and gases, ensuring leak-proof performance in pressurized systems
• Precision Fit for 5/16" Fasteners: 0.325" ID provides secure seating while 1.5" OD offers maximum sealing surface area
• Durable Material Properties: Rockwell B80 hardness ensures structural integrity while Durometer 50A seal hardness provides optimal compression and recovery
• Comprehensive Compliance: Meets RoHS 3 and REACH regulations for global industrial applications and environmental safety
• Visual Seal Verification: Green silicone rubber provides clear identification and quality assurance during installation

Professional Applications & Engineering Value

This metal bonded washer combines the structural strength of 18-8 stainless steel with the exceptional sealing properties of silicone rubber to solve critical challenges in industrial applications. The permanent bond between metal and elastomer eliminates the risk of seal displacement during vibration or thermal expansion, making it ideal for high-temperature environments up to 400°F and cryogenic conditions down to -100°F. Engineers specify these washers for hydraulic systems, pneumatic equipment, and processing machinery where maintaining pressure integrity at 100 psi is essential. The inch system measurement ensures compatibility with North American industrial standards, while the optimized thickness range (0.047-0.109") provides consistent compression across varying flange surfaces.

Specification Summary & Compliance

This precision-engineered metal bonded washer features 0.325" ID for 5/16" screw applications with 1.5" OD for maximum sealing coverage. Manufactured to exacting standards with 18-8 stainless steel (Rockwell B80 hardness) permanently bonded to silicone rubber (Durometer 50A hardness). Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.