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 6150-01-339-4847
NSN 5920-01-051-0090
NSN 5855-01-585-7095
NSN 6150-00-287-6879
NSN 5925-00-882-7510
NSN 6135-00-134-6648
NSN 6650-01-141-5999
NSN 5975-01-279-1095
NSN 5935-00-808-7869
NSN 6645-01-351-6900
NSN 5945-00-204-0041
NSN 6685-01-482-7396