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 5935-00-263-0213
NSN 6110-01-127-0952
NSN 6145-01-504-2444
NSN 5925-00-824-7618
NSN 6145-00-633-5159
NSN 6650-00-877-1797
NSN 6105-01-558-4413
NSN 5975-01-371-2403
NSN 6150-00-046-2425
NSN 6105-01-329-9549
NSN 6685-01-502-6422
NSN 5945-00-358-7652