Female Hex Circuit Board Standoff: #4-40, 3/8" OAL, 1/4" Width Across Flats MPN:P521M12F21-440

This O-ring is an excellent choice for high-temperature applications with a maximum operating temperature of 300F. Its Viton material offers superior chemical resistance and resilience to harsh substances like mineral oil, fuel oil, methanol, and solvents. The 8.237in inside diameter (ID) x 8.443in outer diameter (OD) size makes it suitable for medium-large gaps or hollow shaft assemblies with 0.103in thickness. With a Dash 172 color code, this O-ring is ideal for applications in the automotive, aircraft, hydraulic and pneumatic industries where durability and resistance to chemical exposure are crucial.