A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6620-01-173-0009
NSN 6145-00-170-5274
NSN 6130-00-035-3898
NSN 2925-00-833-9466
NSN 5960-01-072-2876
NSN 5930-00-435-8460
NSN 6620-01-486-0937
NSN 5915-01-620-7115
NSN 5998-01-367-4228
NSN 5965-00-350-2367
NSN 5998-01-054-3344
NSN 6620-00-135-0895