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 6220-00-938-3890
NSN 6610-01-166-4860
NSN 5985-00-778-5164
NSN 5895-01-634-0630
NSN 6105-01-634-0322
NSN 5950-00-529-0599
NSN 5996-01-365-5174
NSN 5855-00-797-8217
NSN 5975-01-277-4967
NSN 6135-00-542-6216
NSN 5855-01-208-1471
NSN 5999-01-328-7930