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 5835-00-876-2554
NSN 6135-00-660-8654
NSN 5920-00-826-9035
NSN 6150-01-438-4392
NSN 5920-01-140-1120
NSN 6130-00-335-9712
NSN 6685-01-107-6875
NSN 5920-01-331-4712
NSN 6650-01-388-7125
NSN 6685-01-019-0705
NSN 6130-01-167-7526
NSN 5855-00-494-9581