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 6320-01-414-7099
NSN 5935-01-219-8475
NSN 5950-01-242-1901
NSN 5998-00-025-5274
NSN 6645-01-400-2119
NSN 5975-01-658-5991
NSN 5945-00-519-3687
NSN 5935-01-063-8638
NSN 5998-01-152-1985
NSN 7035-01-459-8268
NSN 5985-00-855-2303
NSN 6240-01-212-3255