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 5999-00-553-9831
NSN 5965-00-959-4910
NSN 5925-01-013-5046
NSN 7035-00-849-5526
NSN 6685-01-090-4392
NSN 6610-00-144-7036
NSN 4140-00-397-9252
NSN 4140-01-313-2455
NSN 6110-00-834-7801
NSN 5905-01-503-2608
NSN 6620-01-470-9067
NSN 4140-00-791-0500