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 5855-01-047-9267
NSN 6685-01-660-6686
NSN 6645-01-370-4259
NSN 6645-01-243-0468
NSN 5925-01-298-1192
NSN 5920-01-634-0250
NSN 5960-00-287-9932
NSN 7035-01-551-9668
NSN 2925-00-989-0523
NSN 6240-01-091-9822
NSN 5925-01-622-3506
NSN 5975-01-259-2458