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 5920-00-598-0469
NSN 5999-01-399-8726
NSN 6645-01-152-5207
NSN 5930-00-848-8202
NSN 6610-00-190-3684
NSN 5975-01-336-5448
NSN 5945-01-338-5490
NSN 6130-00-305-7717
NSN 6320-01-359-3921
NSN 5930-00-432-9516
NSN 5905-00-147-0389
NSN 5855-01-040-3881