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 6130-01-492-5318
NSN 5930-00-104-6148
NSN 6105-00-377-3943
NSN 6220-01-339-0527
NSN 5920-01-099-8998
NSN 6320-00-676-9387
NSN 6240-01-104-5693
NSN 6135-00-321-6707
NSN 5975-01-553-2296
NSN 5915-00-906-8121
NSN 6610-00-690-6374
NSN 6135-00-835-7211