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 5895-00-206-7373
NSN 5855-01-622-9699
NSN 2925-01-111-2927
NSN 5960-00-462-7145
NSN 5835-01-436-6549
NSN 7035-01-509-1959
NSN 5935-01-348-9030
NSN 5999-01-556-6121
NSN 6610-00-670-7801
NSN 6130-01-420-7339
NSN 6685-00-638-9261
NSN 5925-00-542-8895