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 2925-01-394-9658
NSN 6685-01-445-7409
NSN 6135-01-572-9340
NSN 4140-00-269-5795
NSN 6145-01-518-7073
NSN 5935-01-321-1891
NSN 5965-01-395-6691
NSN 5945-01-098-7836
NSN 6620-00-216-6416
NSN 5945-00-832-6879
NSN 5975-00-156-3654
NSN 4140-01-267-0379