Grass Manufacturing is one of the largest producer of OFE Copper, Aluminum and Nickel Gaskets in the United States. We have been manufacturing gaskets for the high vacuum industry for over fifty years. We continually work closely with our suppliers to ensure delivery of only the highest quality OFE copper available. All of our gasket tooling is regularly maintained to ensure minimal burr and to avoid surface defects.

We also manufacture gaskets in Aluminum H-14 and Nickel 200 Annealed.

Gasket size list