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 5895-00-135-0608
NSN 5998-01-234-7181
NSN 6645-00-780-5260
NSN 5950-01-481-4173
NSN 6110-00-610-0555
NSN 4140-01-452-2526
NSN 6110-01-428-4263
NSN 6145-00-564-5591
NSN 4140-00-197-9712
NSN 5895-01-106-4161
NSN 5975-01-515-3619
NSN 5895-00-398-0029