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 6145-00-284-1514
NSN 5975-01-547-7230
NSN 5998-00-957-1795
NSN 5930-01-029-3151
NSN 5925-01-573-1834
NSN 6320-01-549-3153
NSN 7035-01-126-3239
NSN 6220-00-823-6688
NSN 5925-01-076-4458
NSN 6610-01-433-7899
NSN 7035-01-563-7731
NSN 5945-01-381-2038