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 7035-00-763-6180
NSN 5990-01-485-6495
NSN 5905-01-452-3310
NSN 4140-00-640-6811
NSN 2925-00-284-1534
NSN 5945-01-381-1089
NSN 4140-00-517-7902
NSN 6685-00-540-9017
NSN 5990-01-109-3879
NSN 5935-01-084-9231
NSN 5998-01-491-7982
NSN 5905-00-933-2453