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 5998-01-041-4237
NSN 5915-00-516-9987
NSN 6150-01-604-2177
NSN 6150-00-518-1402
NSN 6145-01-235-6192
NSN 5998-01-631-8642
NSN 6620-00-658-0755
NSN 6135-00-891-4944
NSN 6150-01-572-7563
NSN 6220-00-959-5970
NSN 6130-00-501-8586
NSN 5985-00-682-6254