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 5950-01-271-4200
NSN 6650-01-181-6037
NSN 5935-01-483-1681
NSN 5998-00-140-8665
NSN 5930-00-684-2991
NSN 5996-01-656-4924
NSN 5985-00-264-7569
NSN 6685-01-430-2447
NSN 5950-01-418-0266
NSN 5920-01-068-0178
NSN 6685-00-727-4906
NSN 5996-00-213-7121