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 5910-01-608-3167
NSN 6620-01-285-4685
NSN 5996-00-857-8246
NSN 7035-01-440-8877
NSN 5975-00-361-7793
NSN 6240-00-899-6990
NSN 5975-00-017-9576
NSN 5915-00-622-6762
NSN 6145-01-573-7297
NSN 6150-01-099-1584
NSN 7035-01-024-8067
NSN 6135-00-904-6780