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 5905-01-355-1418
NSN 5920-01-136-6802
NSN 5910-00-992-2070
NSN 5920-01-050-3341
NSN 6130-01-050-7036
NSN 5950-00-707-6107
NSN 5915-00-127-4305
NSN 6105-01-367-6005
NSN 6145-01-594-2389
NSN 6130-00-156-7751
NSN 5910-00-004-2113
NSN 5985-01-398-0786