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 5855-01-295-2313
NSN 5920-01-387-7779
NSN 6145-01-132-2279
NSN 6240-00-677-0305
NSN 5996-01-141-6916
NSN 6105-01-027-1135
NSN 7035-00-782-7046
NSN 5910-01-003-8105
NSN 6105-01-474-2696
NSN 5835-01-493-1826
NSN 5960-01-139-3136
NSN 5930-01-512-2033