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 5935-01-495-5281
NSN 6135-00-866-2311
NSN 5910-00-959-5209
NSN 6645-01-513-0117
NSN 6610-01-361-4193
NSN 6240-01-616-6813
NSN 5915-00-444-5125
NSN 6240-01-182-3002
NSN 5960-01-548-4896
NSN 5915-00-999-7346
NSN 5855-01-118-2228
NSN 5965-00-007-7863