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 6320-00-511-7331
NSN 5930-01-420-5087
NSN 5835-01-357-1247
NSN 5895-01-023-7893
NSN 6135-00-726-4142
NSN 6145-00-529-6748
NSN 6620-00-646-9474
NSN 6110-01-284-6524
NSN 5920-01-634-0250
NSN 6220-00-332-5859
NSN 5960-00-418-3588
NSN 5960-01-416-6187