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 6150-00-554-3362
NSN 5975-01-584-9663
NSN 6620-00-575-9230
NSN 5905-01-532-2666
NSN 6220-00-269-3783
NSN 5960-01-549-4826
NSN 4140-01-530-3716
NSN 6620-01-087-4361
NSN 6685-01-533-2415
NSN 5960-01-200-4621
NSN 5915-00-336-6481
NSN 5915-00-785-2020