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 5990-00-316-8872
NSN 5895-01-260-6220
NSN 5998-00-361-8697
NSN 6135-00-422-3967
NSN 6220-01-071-2609
NSN 6145-01-045-4405
NSN 5996-01-427-8435
NSN 6145-00-293-5097
NSN 5950-01-474-6085
NSN 6150-01-472-1933
NSN 6105-00-246-5311
NSN 5910-01-633-9963