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 6150-00-180-8049
NSN 5835-00-623-9668
NSN 6135-01-214-6441
NSN 4140-01-327-3241
NSN 6110-00-714-0115
NSN 5998-01-252-1137
NSN 5950-01-606-2922
NSN 7035-01-081-8017
NSN 6220-01-292-0980
NSN 4140-01-267-5137
NSN 2925-01-648-6859
NSN 6130-00-710-5696