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 5935-01-120-0435
NSN 5975-00-076-2503
NSN 6645-01-656-6416
NSN 6610-01-494-3703
NSN 5945-01-328-3276
NSN 6645-01-501-0576
NSN 5975-00-222-3516
NSN 6650-01-359-8537
NSN 5905-00-296-8763
NSN 2925-01-484-8556
NSN 5999-01-602-9383
NSN 6320-00-701-0437