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 5935-01-238-6450
NSN 5960-00-430-9253
NSN 5920-00-968-7478
NSN 5930-00-197-5907
NSN 5945-01-191-0108
NSN 5925-01-660-6212
NSN 5975-01-486-2192
NSN 5998-01-086-4376
NSN 6110-01-158-6572
NSN 6685-01-650-9577
NSN 6110-00-967-4928
NSN 5975-01-485-3314