Nitrile rubber flat washer / NBW
This product is a flat washer made of nitrile rubber (NBR) that has excellent oil resistance, abrasion resistance, and mechanical strength. It is used by inserting it between the fastener and the material being fastened during the tightening of bolts and screws. By distributing the load when tightening screws over a larger area, it reduces the stress on the tightening surface, helps prevent dents and scratches on the material, and protects the seating surface. In addition to its excellent oil resistance unique to nitrile rubber (NBR), it also possesses abrasion resistance and good rubber elasticity. It is particularly suitable for applications requiring oil resistance and sealing, such as hydraulic and pneumatic equipment, sealing parts of various industrial machines, and facilities handling liquids and oils, making it an ideal NBR flat washer for fastening and protection purposes.
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basic information
■Specifications - Material: NBR - Color: Black - Hardness: 70° (Durometer Type A) - Hardness: 63° (IRHD reference value) ■Size Variants - Nominal diameter: For M3 / M4 / M5 / M6 / M7 / M8 / M10 / M11 / M12 / M13 / M14 / M15 / M16 / M17 / M18 / M19 / M20 ■EU-RoHS - Compliant with EU-RoHS2
Price information
For more details, please check our website or catalog, or feel free to contact us.
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Applications/Examples of results
We offer a variety of products that can be used for various applications such as printed circuit board assembly, electronic component assembly, semiconductor assembly, relay terminal assembly, distribution board components, robot parts, industrial machinery, machine tool parts, water treatment machinery parts, FA equipment, mobile communications, mobile mobility, and base station-related components.
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We, Hirosugi Instruments, are a comprehensive manufacturer of mechanical and electronics parts, dealing with spacers, terminals, washers, bushes, screws, and more. Our wide range of products boasts a diverse lineup that matches various applications, and we have received high praise from customers in various industries for providing multifunctional, high-quality products with short delivery times and low costs. From product development to design, procurement, and technical support, we provide one-stop support through our product offerings. ■ Company Features ■ 1: Offering a diverse selection of over 118,000 standard parts. 2: One of the largest spacer lineups in Japan. 3: Free shipping for orders over 3,000 yen (excluding tax). 4: Orders can be placed starting from a minimum lot of 50 pieces. 5: High-quality standard products at ISO levels. 6: Fast delivery from our own stock for all products. 7: Affordable pricing with cost control. 8: Support for issuing various certificates. 9: Actively supporting the production of custom products. 10: Providing consistent and specialized services.





