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 6610-00-242-3160
NSN 6135-01-111-1495
NSN 5965-01-466-7829
NSN 5935-00-398-1584
NSN 5910-01-528-6226
NSN 6645-00-358-7379
NSN 6110-01-273-3136
NSN 6240-00-422-1278
NSN 6105-00-660-8882
NSN 5835-01-426-6573
NSN 6610-01-262-1507
NSN 5930-01-392-3139