S-95630A630 4.3 mm ID x 9 mm OD Plastic Washers
Plastic Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Temperature & Environment Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Exceptional chemical resistance for reliable performance in harsh industrial environments with corrosive substances
- High-temperature stability maintaining structural integrity up to 500°F (260°C) for demanding thermal applications
- Consistent mechanical properties with Durometer 51D hardness ensuring long-term dimensional stability and load distribution
- Precision M4 metric sizing with 4.3mm ID and 9mm OD for perfect fit with standard fasteners
- Low friction PTFE construction reducing wear on mating surfaces and preventing galvanic corrosion
- Regulatory compliance meeting RoHS 3 and REACH standards for global industrial applications
- Minimal thickness variation (0.7-0.9mm) ensuring uniform pressure distribution and sealing performance
Professional Applications & Engineering Value
These PTFE flat washers deliver critical engineering solutions where conventional metal washers fail. The PTFE plastic material provides inherent chemical resistance against acids, solvents, and aggressive fluids, making them ideal for chemical processing, pharmaceutical equipment, and food manufacturing applications. Their high-temperature capability to 500°F ensures reliable performance in thermal cycling environments, while the metric M4 sizing with precise 4.3mm internal diameter guarantees proper fit with standard fasteners. The white PTFE construction offers excellent dielectric properties for electrical insulation applications and prevents contamination in cleanroom environments. These washers solve common industrial challenges including corrosion-induced fastener failure, thermal expansion mismatches, and chemical degradation of sealing surfaces.
Specification Summary & Compliance
This flat washer features metric dimensions with 4.3mm ID × 9mm OD and thickness range of 0.7-0.9mm, designed specifically for M4 screw size applications. Manufactured from PTFE plastic with Durometer 51D hardness, the product maintains dimensional stability across its operational range. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial use across global markets.
