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 2925-01-105-5446
NSN 6620-01-292-5072
NSN 5999-01-204-2875
NSN 5930-01-529-4577
NSN 5910-00-526-8005
NSN 5910-01-608-5641
NSN 6620-00-959-6614
NSN 5999-00-602-8566
NSN 2925-00-263-2714
NSN 5930-00-753-6806
NSN 5990-00-274-3225
NSN 6620-01-550-2805