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 5920-01-190-3176
NSN 5998-01-529-6324
NSN 6135-00-803-3012
NSN 6620-01-262-2365
NSN 7035-01-560-9484
NSN 5975-00-516-1771
NSN 6135-01-487-6275
NSN 5835-01-461-8184
NSN 4140-00-801-8060
NSN 4140-01-478-5734
NSN 5855-01-392-1808
NSN 5990-01-199-2846