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 5985-01-478-1720
NSN 5950-00-106-0907
NSN 6650-00-488-8898
NSN 6105-01-558-8908
NSN 6135-00-452-2266
NSN 6105-01-369-5457
NSN 5855-01-170-8957
NSN 5965-01-132-8736
NSN 5935-01-539-6349
NSN 6110-01-103-4046
NSN 6650-01-575-7466
NSN 5960-01-375-5231