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 5945-01-167-8498
NSN 6135-01-463-7077
NSN 5998-01-425-0977
NSN 6220-00-893-9776
NSN 5935-01-226-9316
NSN 5998-01-037-4800
NSN 2925-00-491-3549
NSN 5960-01-359-6630
NSN 5920-01-515-5712
NSN 5835-01-657-0245
NSN 6610-01-538-0016
NSN 6610-01-504-7622