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 6610-01-286-2213
NSN 5855-00-560-0110
NSN 5855-01-165-6361
NSN 5975-01-315-6378
NSN 5930-01-142-8729
NSN 5905-01-169-2632
NSN 5945-01-451-3910
NSN 6220-00-854-2532
NSN 5855-01-389-8884
NSN 5910-00-532-1570
NSN 5999-00-316-6142
NSN 6145-00-099-8986