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 7035-00-329-4015
NSN 6105-00-712-3764
NSN 6610-01-607-4525
NSN 6150-00-468-5416
NSN 5990-01-262-4068
NSN 5998-00-001-2452
NSN 6105-01-290-0981
NSN 5925-01-370-3458
NSN 5930-01-052-9851
NSN 4140-01-534-9987
NSN 6135-01-010-0891
NSN 6145-01-204-7021