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 6110-01-558-2990
NSN 5930-00-677-6603
NSN 5965-01-141-6485
NSN 6320-01-495-1244
NSN 6135-00-874-6566
NSN 7035-01-222-0729
NSN 5930-00-403-8891
NSN 2925-01-548-6674
NSN 6320-00-593-0379
NSN 2925-01-157-9204
NSN 6220-01-327-9254
NSN 5998-00-758-8019