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 5895-01-106-3809
NSN 5975-00-290-4285
NSN 6110-01-127-7264
NSN 5999-01-461-4984
NSN 5835-00-226-7825
NSN 6150-01-190-4478
NSN 6320-01-425-1417
NSN 5998-01-278-1945
NSN 7035-01-442-6870
NSN 6650-01-473-7723
NSN 6145-01-140-0724
NSN 5910-00-099-9998