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 6220-00-815-8194
NSN 6610-01-391-5092
NSN 6130-00-635-9853
NSN 5990-00-165-9195
NSN 4140-01-477-6401
NSN 2925-00-467-7150
NSN 5999-00-320-7459
NSN 6150-01-251-3800
NSN 5996-00-162-6083
NSN 5965-01-012-1065
NSN 6135-01-633-8502
NSN 5910-00-632-8186