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 5950-00-501-2073
NSN 5950-00-232-8108
NSN 4140-01-411-5908
NSN 5895-00-836-9395
NSN 6110-01-378-8801
NSN 5930-00-444-6074
NSN 5990-01-658-9964
NSN 5945-01-326-8551
NSN 5990-01-542-4212
NSN 5975-00-189-0093
NSN 5985-01-453-7171
NSN 5965-01-064-7496