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 5930-01-284-0499
NSN 6150-00-710-7191
NSN 6645-01-373-2262
NSN 6150-00-760-7033
NSN 5925-01-178-8962
NSN 5990-01-210-9788
NSN 5945-01-196-6030
NSN 6150-01-361-6682
NSN 5935-01-212-8004
NSN 2925-01-562-8051
NSN 5895-00-003-9971
NSN 6145-01-069-0588