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 6110-01-481-3942
NSN 5930-01-516-8461
NSN 6130-00-442-0286
NSN 2925-01-467-7672
NSN 5855-01-392-1110
NSN 5905-00-782-4144
NSN 4140-01-491-3882
NSN 6650-01-466-9503
NSN 5925-00-837-0149
NSN 5855-01-007-9541
NSN 6610-01-083-1446
NSN 5930-00-225-8482