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 6145-01-335-6589
NSN 6685-00-806-9345
NSN 5975-01-552-8805
NSN 5835-01-104-5707
NSN 5915-00-814-4964
NSN 6320-01-390-5385
NSN 5910-00-705-5112
NSN 6620-01-026-7371
NSN 4140-01-202-7853
NSN 5910-01-343-2354
NSN 6135-00-958-7981
NSN 6130-00-350-5737