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 5910-01-047-6276
NSN 5935-01-617-3078
NSN 5945-01-381-0156
NSN 5935-01-231-8992
NSN 5998-01-633-2996
NSN 4140-01-005-0154
NSN 6320-00-186-6452
NSN 6620-01-168-5273
NSN 5835-01-621-8553
NSN 5960-01-032-4229
NSN 6610-01-141-7014
NSN 6105-01-190-8960