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 5945-01-067-9527
NSN 2925-01-317-6973
NSN 6620-00-658-6588
NSN 6685-01-201-1743
NSN 5990-01-414-7618
NSN 5855-01-539-0639
NSN 5930-01-563-9098
NSN 6610-01-305-4473
NSN 5975-01-178-4302
NSN 6130-01-371-5048
NSN 6650-01-397-1925
NSN 6685-00-843-2211