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 6645-00-171-9639
NSN 6135-01-296-1860
NSN 6620-01-548-5082
NSN 6320-00-139-1090
NSN 6105-00-223-3719
NSN 5935-00-785-1687
NSN 6220-01-278-9369
NSN 6320-00-459-8973
NSN 5990-01-476-8813
NSN 5975-01-188-6761
NSN 5930-01-241-1857
NSN 5835-01-384-3206