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 5965-01-519-8758
NSN 6240-01-204-1918
NSN 5935-01-495-5599
NSN 5998-00-127-8858
NSN 5965-00-486-7907
NSN 5905-01-531-8303
NSN 5905-00-137-9960
NSN 5999-00-267-9952
NSN 6110-01-056-4378
NSN 5965-01-189-4805
NSN 6620-00-489-7266
NSN 5998-01-280-3450