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 6620-00-115-2501
NSN 5998-01-533-0515
NSN 5990-01-185-5346
NSN 6685-00-171-9815
NSN 6610-00-186-9180
NSN 6110-01-574-0419
NSN 5855-01-594-7809
NSN 5950-01-345-1883
NSN 5998-01-294-7448
NSN 5999-01-624-6827
NSN 6650-00-152-8738
NSN 5855-01-259-6897