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 6150-01-413-8419
NSN 5998-01-179-2834
NSN 5910-01-032-7756
NSN 7035-01-063-0453
NSN 5905-01-601-1775
NSN 2925-01-592-5578
NSN 6135-01-260-7180
NSN 5930-00-622-1704
NSN 6150-01-315-8970
NSN 6150-00-181-1711
NSN 2925-01-534-7314
NSN 5920-01-088-5944