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 6135-00-497-0491
NSN 5998-01-026-1206
NSN 5920-01-345-7145
NSN 5965-01-117-2566
NSN 6240-00-843-0698
NSN 6130-00-403-2044
NSN 6145-01-467-9872
NSN 6645-00-392-8728
NSN 5835-01-645-2892
NSN 6150-00-982-2785
NSN 5960-01-523-9098
NSN 6620-01-397-8683