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 6110-01-503-5041
NSN 6650-01-263-5412
NSN 6320-01-162-5977
NSN 5945-01-421-1808
NSN 5855-01-147-4785
NSN 5935-00-915-1227
NSN 5905-01-634-0595
NSN 5998-01-048-1304
NSN 5855-00-688-9954
NSN 6240-01-517-7566
NSN 5965-01-142-1807
NSN 6320-00-116-3658