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 5895-01-550-3374
NSN 5996-00-491-1142
NSN 5835-01-471-5848
NSN 5855-01-149-4110
NSN 5905-00-165-3284
NSN 5855-01-511-2614
NSN 6620-00-364-6890
NSN 6145-00-155-5297
NSN 5996-01-146-5765
NSN 5945-00-884-8493
NSN 6135-01-522-3386
NSN 6320-01-506-9439