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 6645-00-724-7668
NSN 6130-01-483-8774
NSN 6135-01-490-0278
NSN 4140-01-086-6536
NSN 5925-01-026-0891
NSN 5910-01-468-0722
NSN 5895-00-420-7042
NSN 5998-01-322-8579
NSN 5855-01-295-2313
NSN 6135-01-432-2785
NSN 5945-01-373-7695
NSN 6130-00-068-1885