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 6620-01-481-1358
NSN 5960-01-619-9361
NSN 5998-01-557-5375
NSN 5998-01-519-9273
NSN 6110-01-118-7115
NSN 5920-00-655-1154
NSN 6645-01-386-6311
NSN 6105-00-275-0826
NSN 5985-01-559-8915
NSN 5910-01-067-8361
NSN 5935-01-363-4956
NSN 2925-01-055-7607