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 2925-01-444-2061
NSN 6110-01-487-2130
NSN 5920-01-455-8619
NSN 6150-00-691-1705
NSN 5990-00-446-0518
NSN 6105-00-287-8971
NSN 5935-00-188-0135
NSN 5910-00-051-9066
NSN 6105-00-541-8472
NSN 5920-01-037-9180
NSN 6220-00-117-4547
NSN 6105-00-574-8915