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 6135-01-127-0173
NSN 6685-01-580-0669
NSN 2925-00-428-6349
NSN 6650-00-391-8404
NSN 5945-00-732-0069
NSN 5960-01-570-8605
NSN 6110-00-075-3860
NSN 5998-01-211-6752
NSN 5930-01-103-4276
NSN 6650-00-690-8709
NSN 5935-01-350-1991
NSN 5925-00-478-3352