Mfr-Direct Rubber Washers, O-Rings, Flange Gaskets, Weather Stripping, Low Minimum Custom Fabrication Services, more Custom Die Cutting, Rubber, Rubber Washers, Plastic Washers, Gaskets, Seals USA Custom Gasket Manufacturing By industrial classification, we are most aptly described as a gasket manufacturer, though most of our products aren't gaskets to our customers.