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 5999-00-418-1124
NSN 6620-01-435-7083
NSN 5945-01-255-3460
NSN 6685-00-269-6444
NSN 5935-00-044-2435
NSN 5920-01-391-7624
NSN 5920-01-381-0205
NSN 5998-00-952-3008
NSN 5925-01-602-8786
NSN 5915-01-525-9893
NSN 6130-01-576-9618
NSN 5975-01-228-7178