Nail Gun Gasket

American House

I need to replace the head gasket quick for a Grizzly finish nailer....none available from the manuf. I though I could cut a sheet. What kind of material is the gasket. I already stripped the old one. Duh!

BKFranks

You tried here? http://www.grizzly.com/products/h6143/parts

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American House

Yes. Their gasket is out of stock. I just cut in a rubber gasket. Seems to work for the time being.
The leak is at the trigger. The gun seems to charge, but when I pull the trigger the there is an escape of air there. I ordered every possible washer and O ring from the parts list from the head down to the trigger, and I plan to replace them all, but I would like to figure out first what's going on.