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 6650-01-628-3745
NSN 6130-01-126-0455
NSN 5930-00-577-2599
NSN 5975-01-425-1101
NSN 6610-00-996-2566
NSN 6135-00-702-2772
NSN 5895-00-519-5907
NSN 5930-00-661-2280
NSN 5920-01-319-1062
NSN 5985-00-143-8134
NSN 6620-01-428-3930
NSN 5996-01-630-2492