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 6620-01-146-4680
NSN 2925-00-632-8153
NSN 5960-01-093-6223
NSN 6110-00-762-2851
NSN 5905-00-189-8713
NSN 5930-01-429-1289
NSN 6130-01-631-4900
NSN 5910-01-597-9558
NSN 6135-00-044-3860
NSN 5996-00-229-7037
NSN 5935-01-487-6336
NSN 5998-00-553-7172