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 6610-01-336-2787
NSN 6645-00-851-4575
NSN 5925-00-841-6798
NSN 5998-00-606-7447
NSN 5960-01-399-4327
NSN 6320-01-170-4068
NSN 6105-01-013-6725
NSN 2925-00-992-7904
NSN 5905-01-390-4298
NSN 5935-00-122-8669
NSN 6685-01-157-1288
NSN 4140-01-067-8242