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 6645-01-338-1423
NSN 5990-01-452-0911
NSN 6645-01-362-2587
NSN 5855-01-623-8420
NSN 6110-01-232-0071
NSN 6105-01-507-3012
NSN 6320-01-371-3047
NSN 6620-00-186-8220
NSN 6130-01-557-8651
NSN 5975-00-661-1832
NSN 6135-00-299-6918
NSN 5990-01-565-2226