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 5895-00-056-8573
NSN 5915-01-383-7057
NSN 2925-01-190-3121
NSN 5905-01-284-7040
NSN 6645-00-760-5599
NSN 6130-01-446-3429
NSN 6135-01-260-7180
NSN 5965-01-335-6630
NSN 5965-00-879-7287
NSN 6610-01-524-7068
NSN 6105-01-523-3733
NSN 4140-01-135-9271