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 5975-01-092-8655
NSN 2925-01-607-4340
NSN 5915-00-758-7755
NSN 2925-01-353-3928
NSN 5910-00-350-9648
NSN 5935-01-556-7875
NSN 6685-00-663-5738
NSN 5965-01-008-8712
NSN 6610-01-641-7834
NSN 6685-01-573-6443
NSN 6150-01-357-7849
NSN 5965-00-815-2525