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 6220-01-634-0660
NSN 5915-01-309-8643
NSN 5895-01-406-3482
NSN 5835-01-436-6549
NSN 6685-01-433-3745
NSN 5965-00-802-6683
NSN 6240-01-055-9696
NSN 6135-01-100-3593
NSN 6135-01-442-4581
NSN 5930-01-354-3784
NSN 5930-00-293-2492
NSN 5905-01-370-6323