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 6130-00-927-6421
NSN 5895-01-608-3588
NSN 6130-01-557-1583
NSN 6135-01-215-1245
NSN 5920-00-853-8266
NSN 4140-01-452-7085
NSN 5910-01-185-4151
NSN 5930-00-814-9336
NSN 5910-01-644-8589
NSN 6110-01-655-1260
NSN 5835-01-623-3328
NSN 6685-01-606-7345