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 6645-00-177-4729
NSN 6645-01-349-6632
NSN 5930-01-426-9130
NSN 6150-01-179-1868
NSN 5975-00-937-9211
NSN 5975-00-473-7859
NSN 5935-01-634-0668
NSN 5985-00-489-3693
NSN 5935-00-126-5937
NSN 5935-01-526-4287
NSN 6610-01-134-8993
NSN 5910-01-167-9155