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 5920-00-717-6839
NSN 6320-01-449-1014
NSN 5920-01-326-4247
NSN 5855-01-437-6161
NSN 5920-00-933-4052
NSN 6320-00-270-8222
NSN 2925-01-426-3410
NSN 5905-01-065-1663
NSN 5960-00-794-7463
NSN 6650-01-589-3585
NSN 2925-00-101-7972
NSN 6220-01-381-1793