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 6130-01-420-5755
NSN 6130-00-870-6792
NSN 5975-01-438-4275
NSN 4140-01-082-3403
NSN 5985-01-521-2625
NSN 2925-01-242-2309
NSN 6645-01-470-2951
NSN 6145-01-512-1309
NSN 6150-01-012-3107
NSN 5950-00-015-3689
NSN 6645-00-226-2270
NSN 6105-01-111-6235