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 4140-00-669-6109
NSN 7035-01-263-5463
NSN 6645-01-386-6311
NSN 2925-01-550-0177
NSN 6610-00-262-9146
NSN 6150-00-951-3420
NSN 5960-00-613-7830
NSN 5998-00-318-8130
NSN 6620-01-605-1465
NSN 5915-01-267-7199
NSN 6620-01-386-5914
NSN 6620-01-212-1417