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 5998-01-590-1631
NSN 5999-01-346-9952
NSN 5835-01-316-3255
NSN 5930-00-006-9138
NSN 6320-01-141-3791
NSN 5920-00-059-3549
NSN 7035-00-153-3826
NSN 5895-00-969-9113
NSN 5920-01-391-7624
NSN 7035-01-384-7573
NSN 6620-00-807-6954
NSN 6240-01-232-7025