S-94709A138 0.125" ID x 0.312" OD Bonded Sealing Washers

Key Features & Benefits at a Glance

• Exceptional Sealing Performance: The integrated neoprene rubber seal provides reliable, leak-proof sealing for No. 4 screw applications, preventing fluid and dust ingress in demanding environments.
• Wide Temperature Resilience: Operates effectively in extreme conditions from -40°F to 250°F, ensuring consistent performance in both freezing cold and high-heat industrial settings.
• Corrosion-Resistant Construction: Made from 18-8 stainless steel, offering excellent resistance to rust and corrosion, which extends the washer's lifespan in harsh or outdoor applications.
• Durable Seal Material: The Durometer 65A neoprene seal balances flexibility and hardness, providing a tight, long-lasting seal without compromising on durability.
• Precision Fit for No. 4 Screws: With an ID of 0.125" and OD of 0.312", this washer ensures a secure, snug fit, reducing the risk of loosening under vibration or load.
• Metal Bonded Design: The permanent bond between metal and rubber eliminates separation issues, offering a unified component that simplifies installation and enhances reliability.
• Versatile Industrial Use: The black neoprene seal is suitable for various fluids and environments, making it ideal for automotive, plumbing, and machinery assemblies where sealing integrity is critical.

Professional Applications & Engineering Value

This metal bonded washer combines the strength of 18-8 stainless steel with the flexibility of a neoprene rubber seal to address common industrial challenges like fluid leakage, vibration loosening, and exposure to temperature extremes. Engineered for No. 4 screw applications, it ensures a secure, sealed connection in assemblies subjected to harsh conditions, such as in automotive engines, HVAC systems, and outdoor equipment. The black neoprene seal offers excellent resistance to oils, water, and weathering, while the stainless steel body provides structural integrity and corrosion resistance. This design minimizes maintenance needs and downtime, making it a cost-effective solution for industrial washers requiring reliable performance in temperature ranges from -40°F to 250°F.

Specification Summary & Compliance

This washer features precise dimensions with an ID of 0.125" and OD of 0.312", and a thickness range of 0.175-0.210", ensuring compatibility with standard No. 4 screw sizes in inch-based systems. It is manufactured using 18-8 stainless steel and a neoprene rubber seal with a hardness of Durometer 65A, adhering to common industrial standards for bonded seal washers. The product is designed to meet general industry requirements for temperature resistance and durability, though specific hardness ratings are not certified. It is suitable for applications requiring reliable sealing and corrosion resistance, with no explicit compliance claims for RoHS or REACH provided; users should verify suitability for their specific regulatory needs.