The design makes it difficult for the rubber to protrude even when tightening to the appropriate torque! It seals the fluid on the side.
At Sanwa Ai, we handle "seal washers." This is a set product that incorporates a rubber packing into a metal-formed bowl-shaped washer. The rubber packing is press-fitted onto the threaded part of the bolt, sealing fluids at the side. Designed to minimize rubber overflow even under proper torque tightening, we use SUS304, which is resistant to rust, as the standard material, and offer packings made of NBR (standard specification), silicone, fluororubber, and EPDM. 【Features】 - Suitable for preventing gas and liquid leakage - Passed pressure tests of 200 atmospheres (20 MPa) - Provides sufficient performance even when used directly on the surfaces of black steel and cast iron - Vibration damping and soundproofing effects - Metal and rubber packing do not resonate with vibrations *For more details, please refer to the PDF materials or feel free to contact us.
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Sanwa Ai is a trading company specializing in the research and development of screws. From one screw among 50,000 items to custom-made products, we respond to our customers' needs with the technology and know-how cultivated over half a century.
