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 6110-01-502-4879
NSN 5855-01-175-2465
NSN 6320-01-352-5653
NSN 5945-01-305-7593
NSN 5925-01-472-6774
NSN 5905-01-555-4040
NSN 5920-01-461-7676
NSN 5990-00-230-8981
NSN 6145-01-199-3831
NSN 5945-01-534-9923
NSN 5935-01-443-4814
NSN 5925-00-599-6339