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 6150-00-436-1846
NSN 6105-01-444-3849
NSN 5915-00-203-2380
NSN 5925-01-275-4555
NSN 6150-00-250-5166
NSN 5855-01-634-0259
NSN 5999-01-123-5460
NSN 6135-00-471-5356
NSN 6620-01-434-6538
NSN 7035-01-478-5922
NSN 5960-01-194-4506
NSN 5920-00-715-2541