S-91195A142 4.9 mm ID x 19.1 mm OD Washdown Bonded Sealing Washers

Key Features & Benefits at a Glance

• Exceptional temperature resilience with a broad operating range from -100°F to 400°F, ensuring reliable performance in both cryogenic and high-heat industrial environments.
• Superior sealing capability thanks to the bonded red silicone rubber seal, which provides effective protection against fluid and gas leaks up to 100 psi.
• Long-lasting durability and corrosion resistance from 18-8 stainless steel construction and Rockwell B80 hardness, reducing maintenance needs in harsh conditions.
• Precise M5 screw compatibility with a 4.9mm ID and 19.1mm OD, offering a secure fit and even load distribution for metric fastener assemblies.
• Chemical and environmental resistance due to the Durometer 50A silicone seal, ideal for applications exposed to oils, solvents, and varying weather.
• Regulatory compliance assurance with RoHS 3 and REACH standards, supporting safe and sustainable use in global industrial supply chains.
• Reliable pressure containment for both fluids and gases up to 100 psi, minimizing failure risks in pressurized systems.

Professional Applications & Engineering Value

This M5 metal bonded washer integrates an 18-8 stainless steel body with a red silicone rubber seal to address critical challenges in sealing and vibration management. The metal bonded design ensures the seal remains securely attached under dynamic loads, preventing common issues like seal displacement or leakage in high-temperature and pressure-resistant applications. Engineers value its ability to maintain integrity in extreme temperature settings, from sub-zero refrigeration units to heated industrial machinery, while the metric dimensions (4.9mm ID, 19.1mm OD) provide precise alignment for M5 screw size fasteners. Ideal for automotive, aerospace, and chemical processing sectors, it delivers consistent performance where fluid and gas sealing are paramount, reducing downtime and enhancing system longevity.

Specification Summary & Compliance

The washer features precise metric dimensions with an ID of 4.9mm and OD of 19.1mm, tailored for M5 screw applications. It complies with industry standards for material properties, including a Rockwell B80 hardness for the stainless steel and Durometer 50A for the silicone seal. The product is verified to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety requirements for hazardous substances.