S-90131A331 1.5" ID x 3" OD Abrasion-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior vibration dampening with SBR rubber construction to reduce noise and prevent fastener loosening in dynamic industrial environments
• Excellent sealing performance that blocks moisture, dust, and chemicals while maintaining flexibility across temperature variations
• Enhanced durability and tear resistance thanks to polyester fiber filler reinforcement that extends service life under compression
• Consistent dimensional stability with precise 1.5" ID and 3" OD measurements ensuring proper fit for 1 1/2" screw applications
• Optimal hardness balance at Durometer 70A providing both cushioning effect and structural integrity under load
• Reliable high-temperature performance maintaining properties up to 170°F (77°C) for various industrial operating conditions
• Environmental compliance assurance with RoHS 3 certification for safe use in regulated industries

Professional Applications & Engineering Value

These SBR rubber flat washers deliver critical engineering solutions where standard metal washers fall short. The black SBR rubber material with polyester fiber filler creates a resilient barrier that absorbs mechanical shocks and compensates for surface irregularities in mating components. Industrial engineers specify these flat washers for equipment requiring reliable vibration dampening in automotive assembly, machinery mounting, and plumbing systems. The combination of chemical resistance and temperature tolerance up to 170°F makes them ideal for applications exposed to lubricants, mild solvents, and thermal cycling. Unlike basic rubber washers, the reinforced construction prevents extrusion under bolt torque while maintaining consistent sealing performance across the full 0.110-0.140" thickness range.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with 1.5" inner diameter and 3" outer diameter, these flat washers maintain consistent thickness tolerance between 0.110-0.140". The SBR rubber composition with Durometer 70A hardness and polyester fiber reinforcement ensures reliable performance for 1 1/2" screw applications. Compliant with RoHS 3 (2015/863/EU) standards, these washers meet international environmental regulations while delivering maximum temperature resistance of 170°F for industrial use.