Copper Sealing Washers - .390 X .590 X 18G - 100x - Van Line - HCU48

The HCU48 washers have an internal diameter of .390 inches, an outer diameter of .590 inches, and a thickness of 18 gauge (approximately 0.047 inches).

These sealing washers are made from copper.

Each pack contains 100 copper sealing washers.

Yes, copper sealing washers are generally suitable for moderate to high-pressure applications due to their ability to conform to surfaces and create a tight seal.

Copper sealing washers are designed to deform and create a seal upon initial tightening. While they can sometimes be reused, it's best practice to use a new washer for critical applications to ensure a reliable seal.

These washers are commonly used in the automotive, agricultural, and engineering industries for sealing various fluid and gas systems.

Store the washers in a clean, dry place away from moisture to prevent unnecessary oxidation and maintain their condition.

Ensure the mating surfaces are clean and flat. Verify that the correct size washer was used and that the fastener was tightened to the appropriate torque specification. Check for any damage to the washer itself.

Confirm that the washer's internal diameter matches the bolt or fitting accurately. Ensure there are no obstructions on the surface or the fastener. If it's excessively tight, re-check the measurements.

Copper naturally oxidizes, which is a surface-level change and does not typically impede sealing function. However, if stored improperly, significant corrosion might occur. Store in a dry place. If corrosion is severe, consider replacing the washer.