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 5998-01-360-3680
NSN 4140-00-703-3207
NSN 5950-01-132-3519
NSN 6220-01-026-7260
NSN 5960-01-181-2143
NSN 6620-00-593-5313
NSN 5895-01-491-7410
NSN 6620-00-524-3596
NSN 5965-01-644-4700
NSN 6135-01-010-0891
NSN 5930-01-601-5034
NSN 6620-01-502-9104