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 6620-01-442-7951
NSN 5855-01-255-1688
NSN 6240-00-270-8182
NSN 6620-00-052-3277
NSN 7035-01-443-3052
NSN 6220-00-520-0333
NSN 2925-00-070-4576
NSN 6150-01-247-1490
NSN 6105-01-066-8216
NSN 5945-00-999-9519
NSN 5920-01-271-2304
NSN 5998-01-365-6750