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 6610-01-039-0788
NSN 6240-01-070-6028
NSN 5925-01-089-9791
NSN 5960-01-142-1995
NSN 6650-01-545-8851
NSN 5998-00-516-1345
NSN 5920-01-533-2602
NSN 5990-00-085-4299
NSN 4140-00-006-7710
NSN 5985-01-634-0635
NSN 5965-01-473-0825
NSN 5905-01-281-1185