S-90131A647 1.25" ID x 2.75" OD Abrasion-Resistant Cushioning Washers

Key Features & Benefits at a Glance

• Superior Sealing Performance: SBR rubber construction with Durometer 70A hardness provides excellent compression and recovery for reliable fluid and dust sealing in industrial environments.
• Enhanced Durability & Load Distribution: Polyester fiber reinforcement increases structural integrity, preventing deformation under pressure and extending service life in heavy-duty applications.
• Effective Vibration & Noise Dampening: Elastic rubber material absorbs shocks and reduces equipment vibration, minimizing wear on connected components.
• Wide Temperature Resistance: Withstands continuous exposure up to 170°F, maintaining flexibility and performance in varied operational conditions.
• Precise Fit for 1 1/8" Screws: 1.25" ID ensures secure fastening alignment, reducing installation time and improving assembly accuracy.
• Regulatory Compliance Assurance: Meets RoHS 3 and REACH standards, ensuring safe use in regulated industries without hazardous substance concerns.
• Versatile Sizing & Black Color: 2.75" OD and 0.156-0.218" thickness range offer optimal surface coverage, while black coloring resists visible staining in demanding settings.

Professional Applications & Engineering Value

This SBR rubber flat washer is engineered to address critical challenges in sealing, vibration management, and chemical resistance across industrial applications. The Durometer 70A hardness delivers an ideal balance of softness for compression sealing and firmness to maintain shape under load, preventing leaks in plumbing, automotive, or machinery assemblies. Reinforced with polyester fiber filler, it resists tearing and extrusion in high-pressure environments, while the black SBR material provides inherent resistance to oils, water, and aging. Commonly used as a gasket or vibration dampening washer, it effectively isolates noise in HVAC systems, supports electrical enclosures, and cushions mounting points in construction equipment—ensuring long-term reliability without frequent replacements.

Specification Summary & Compliance

This washer adheres to inch system dimensions with an ID of 1.25", OD of 2.75", and thickness tolerance of 0.156-0.218", designed for 1 1/8" screw size compatibility. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances. The Durometer 70A hardness ensures consistent performance, backed by a maximum temperature rating of 170°F for operational safety in standardized industrial settings.