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 5935-01-173-8247
NSN 5996-01-593-3026
NSN 6610-01-259-5296
NSN 5998-00-606-3659
NSN 6135-01-290-6487
NSN 5895-00-222-5043
NSN 6620-01-093-1383
NSN 6610-01-392-0231
NSN 6240-01-116-3382
NSN 6620-00-757-5299
NSN 5935-00-028-4139
NSN 5835-01-056-9303