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 5965-01-254-3622
NSN 6645-00-258-8547
NSN 5930-00-079-0046
NSN 5996-01-352-0366
NSN 5910-01-468-6391
NSN 5915-01-501-5895
NSN 5965-01-350-1890
NSN 6685-00-759-4097
NSN 5835-01-251-4945
NSN 5910-01-560-4230
NSN 6610-00-594-6372
NSN 5915-00-103-2631