Teflon Bulkhead Washer Packs From:

Speedflow have a full range of Teflon Washers to suit our range of bulkheads.

Available in AN sizes to suit our bulkhead range and sold in packs of 10 (X) or 100 (C). 

Teflon washers will seal bulkheads in installations in fuel cells, oil tanks and other similar applications.

Teflon is a great material for this application as it will not react to common automotive fluids and chemicals.