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 5935-00-243-5981
NSN 4140-01-177-1445
NSN 5998-01-327-3867
NSN 5950-00-530-7273
NSN 5935-00-649-9065
NSN 2925-01-285-7163
NSN 5999-01-645-2415
NSN 5965-00-468-3071
NSN 5960-00-266-6741
NSN 6150-01-107-9984
NSN 5945-01-237-2592
NSN 2925-01-099-7075