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 6240-01-350-3533
NSN 5950-00-242-2645
NSN 5895-01-320-7013
NSN 6620-01-178-4771
NSN 5985-01-330-8809
NSN 5990-01-179-5625
NSN 6220-01-307-8223
NSN 6320-01-050-1290
NSN 6150-00-369-0376
NSN 5910-01-410-7326
NSN 6645-01-470-7246
NSN 6135-01-236-8603