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 2925-01-185-1814
NSN 6135-01-461-2915
NSN 6240-01-381-1072
NSN 5935-00-674-6650
NSN 6135-00-635-9187
NSN 5975-01-125-8301
NSN 6240-01-052-5971
NSN 5915-01-318-8076
NSN 6685-01-463-3470
NSN 5915-01-471-3487
NSN 6645-01-049-6116
NSN 6220-01-549-8454