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 6240-01-418-5021
NSN 6110-01-241-7560
NSN 5965-01-332-9825
NSN 5935-00-968-6112
NSN 6130-01-571-8628
NSN 5935-01-161-2029
NSN 5985-01-269-0530
NSN 2925-00-791-8776
NSN 5960-01-544-1273
NSN 6105-01-577-0014
NSN 5945-00-498-6802
NSN 5915-00-811-7288