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 7035-00-048-3723
NSN 6685-01-135-6921
NSN 5915-01-088-8128
NSN 5905-01-410-8694
NSN 6220-00-463-4812
NSN 5835-01-502-9228
NSN 5910-01-018-3222
NSN 2925-01-554-5246
NSN 6620-01-492-4271
NSN 6110-00-621-3475
NSN 5855-00-149-0766
NSN 6105-00-998-1737