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 5999-01-083-2741
NSN 6645-00-873-4642
NSN 6620-00-826-7238
NSN 6110-01-221-3124
NSN 5996-01-347-3411
NSN 2925-01-140-1015
NSN 6145-01-050-1187
NSN 7035-01-261-9850
NSN 2925-01-201-3043
NSN 6620-01-610-5081
NSN 6220-01-251-9299
NSN 5920-00-382-8849