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 6145-01-218-6029
NSN 5975-01-111-3623
NSN 5895-01-305-1328
NSN 6110-01-248-2356
NSN 6320-01-371-1603
NSN 4140-01-589-1092
NSN 5945-00-775-6998
NSN 5960-01-641-5493
NSN 5935-01-380-9668
NSN 5905-00-203-5400
NSN 6135-01-168-2944
NSN 6685-01-461-2484