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 5996-01-177-8789
NSN 5985-01-208-8151
NSN 5999-01-514-7439
NSN 6650-01-325-3747
NSN 6610-01-607-4525
NSN 5895-00-615-4257
NSN 5985-01-532-5266
NSN 5998-01-647-8525
NSN 5950-01-378-1439
NSN 4140-00-259-2567
NSN 5999-01-538-8380
NSN 7035-00-931-9415