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 6150-01-019-1629
NSN 6320-01-600-0787
NSN 6135-01-101-5039
NSN 6650-00-915-8545
NSN 5965-00-913-9545
NSN 6685-01-353-0658
NSN 6110-00-669-6586
NSN 5925-00-502-7261
NSN 5935-01-634-0668
NSN 5935-00-488-3690
NSN 5910-00-069-9969
NSN 5855-01-409-1792