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 5910-00-923-9752
NSN 5960-01-495-0859
NSN 6105-01-647-0108
NSN 6220-01-187-1028
NSN 6145-01-013-4068
NSN 5975-00-283-6686
NSN 6130-01-348-5919
NSN 4140-01-261-1214
NSN 5915-00-148-8253
NSN 5960-01-211-8344
NSN 6150-01-629-4616
NSN 6135-00-823-3034