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 5835-00-987-9341
NSN 5910-00-667-5136
NSN 5935-00-405-2245
NSN 6620-00-155-2608
NSN 6145-01-429-8529
NSN 2925-00-234-7918
NSN 5975-00-226-1167
NSN 6110-00-305-2838
NSN 5835-01-632-6627
NSN 5835-01-068-4214
NSN 2925-01-459-8093
NSN 4140-01-550-0022