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 6150-00-283-0995
NSN 6650-00-548-9797
NSN 6145-01-414-2195
NSN 5920-01-276-9071
NSN 5835-01-515-6537
NSN 6620-01-231-9731
NSN 6620-01-556-9512
NSN 5910-01-589-6553
NSN 5996-01-370-4940
NSN 5999-01-437-3052
NSN 5965-01-170-9891
NSN 2925-00-759-5465