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 5915-00-271-2321
NSN 6685-00-299-8496
NSN 7035-01-106-3476
NSN 5920-01-218-6191
NSN 6105-01-658-4191
NSN 5965-01-210-7784
NSN 5925-01-107-1951
NSN 6145-01-306-6060
NSN 5915-01-266-3143
NSN 4140-01-461-7885
NSN 6220-00-141-0268
NSN 6320-01-274-8886