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 6105-01-381-9238
NSN 5925-00-934-3365
NSN 6135-01-507-4346
NSN 6130-01-374-2157
NSN 5915-01-278-9176
NSN 5998-01-175-9109
NSN 6645-01-452-6760
NSN 5975-01-641-7294
NSN 5930-01-585-2468
NSN 5835-01-632-6627
NSN 6130-01-184-3225
NSN 5835-01-092-6759