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 5935-00-868-8700
NSN 5905-01-646-1831
NSN 6150-01-423-9673
NSN 5835-01-510-7293
NSN 4140-01-592-5371
NSN 6610-01-516-2442
NSN 5965-00-682-3567
NSN 6685-01-468-7660
NSN 6320-01-021-6633
NSN 6650-01-438-4117
NSN 6685-00-590-8271
NSN 5975-00-221-7175