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 5945-00-242-7434
NSN 5960-01-144-9183
NSN 6320-01-512-2031
NSN 6150-01-494-5741
NSN 6685-00-152-3982
NSN 5835-00-698-9824
NSN 6105-00-840-6433
NSN 5998-00-256-9469
NSN 5905-01-407-5277
NSN 5935-01-593-2633
NSN 5960-01-495-0859
NSN 5930-01-306-3888