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 5905-01-163-4299
NSN 5915-01-442-4245
NSN 5910-01-624-5690
NSN 5945-01-519-4998
NSN 5895-01-557-5370
NSN 6610-01-334-8883
NSN 6105-01-347-0070
NSN 5990-00-434-7762
NSN 5915-00-180-3979
NSN 6105-01-608-3028
NSN 4140-00-459-9045
NSN 2925-00-516-8841