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 5996-01-493-9908
NSN 5935-01-476-8440
NSN 5910-00-935-6459
NSN 6145-01-212-6192
NSN 6130-01-160-0227
NSN 5835-01-540-4995
NSN 4140-01-031-6391
NSN 5999-01-261-2266
NSN 2925-01-244-3016
NSN 4140-01-634-0330
NSN 6135-00-715-4001
NSN 5965-01-012-1065