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 6240-01-121-0469
NSN 6220-01-197-0013
NSN 6610-00-179-9035
NSN 6220-01-003-9126
NSN 6685-01-495-7140
NSN 5915-01-240-2301
NSN 5915-01-066-4791
NSN 5990-01-027-1869
NSN 6240-01-364-0815
NSN 6130-01-170-5660
NSN 2925-01-544-3018
NSN 6150-01-634-0575