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 6320-01-194-1253
NSN 6645-00-033-8714
NSN 5975-01-549-9230
NSN 5920-01-374-8985
NSN 6610-01-569-9086
NSN 6150-01-654-5340
NSN 7035-01-300-8409
NSN 6620-00-803-2346
NSN 5905-00-966-2396
NSN 5965-00-543-1837
NSN 6645-00-022-8691
NSN 4140-01-261-9892