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 6645-01-192-8717
NSN 6220-00-401-4648
NSN 5950-01-070-2882
NSN 5965-01-083-0958
NSN 6610-01-586-8678
NSN 5960-01-476-3239
NSN 6145-00-212-0422
NSN 6220-01-099-3429
NSN 6135-01-457-7849
NSN 5935-00-361-9546
NSN 6320-01-492-0243
NSN 5950-00-028-4118