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 5990-01-231-1214
NSN 6150-00-946-5071
NSN 2925-00-167-1267
NSN 5930-01-140-1698
NSN 2925-01-408-9362
NSN 5996-00-052-7801
NSN 5915-01-321-8119
NSN 5935-01-459-0461
NSN 5920-01-441-4341
NSN 6620-00-726-4849
NSN 5930-00-726-6970
NSN 5915-01-206-4382