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 6645-00-369-4410
NSN 5930-00-642-9974
NSN 5935-01-466-5980
NSN 5930-01-470-9327
NSN 5960-01-035-1260
NSN 5930-01-489-6205
NSN 6220-01-110-3063
NSN 5905-01-113-6821
NSN 6650-00-904-0085
NSN 6110-01-567-6596
NSN 5996-01-432-1145
NSN 5960-00-111-0457