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 5925-01-156-0361
NSN 5975-01-274-4516
NSN 5925-00-893-8566
NSN 6620-01-537-1326
NSN 5998-01-252-6457
NSN 5905-01-432-0768
NSN 5935-01-423-9463
NSN 5930-01-091-4477
NSN 6130-01-261-4851
NSN 5930-01-084-7464
NSN 5998-01-045-8546
NSN 5935-01-397-2893