S-95630A435 0.137" ID x 0.25" OD Plastic Washers

Key Features & Benefits at a Glance

• Exceptional chemical resistance ensures reliable performance in harsh industrial environments, reducing corrosion and maintenance needs.
• High-temperature tolerance up to 500°F allows for stable operation in extreme heat applications without degradation.
• Durometer 55D hardness provides optimal durability and load distribution, extending the lifespan of assemblies.
• Precision inch dimensions (0.25" OD, 0.137" ID) guarantee a secure fit for No. 4 screws, minimizing loosening and vibration issues.
• RoHS 3 and REACH compliance meets strict environmental and safety standards, supporting sustainable and regulated industrial use.
• PTFE material properties offer low friction and non-stick characteristics, enhancing ease of installation and removal.
• White color and flat design facilitate easy identification and consistent performance in various assembly setups.

Professional Applications & Engineering Value

These PTFE plastic flat washers are engineered to address critical challenges in demanding sectors such as chemical processing, aerospace, and high-temperature manufacturing. Made from PTFE material, they excel in environments where chemical resistance and thermal stability up to 500°F are paramount, preventing failures caused by corrosion or heat deformation. The precise inch system measurements and compatibility with No. 4 screw sizes ensure a tight, reliable seal that reduces leakage and vibration in assemblies. By incorporating Durometer 55D hardness, these washers maintain integrity under stress, offering long-term value in applications like machinery, electrical enclosures, and fluid handling systems where durability and compliance with industry standards are essential.

Specification Summary & Compliance

This flat washer adheres to precise dimensional tolerances with an inner diameter of 0.137", outer diameter of 0.25", and thickness ranging from 0.027" to 0.035", ensuring accurate fit for No. 4 screw sizes in inch-based systems. Manufactured from PTFE plastic, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for industrial use without hazardous substances. The specifications support reliable performance in high-temperature and chemical-exposure scenarios, meeting common engineering requirements for flat washers in critical applications.