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 5990-00-405-5182
NSN 5855-00-357-1158
NSN 6685-00-637-8553
NSN 6240-01-471-3654
NSN 5960-01-499-7172
NSN 6220-01-185-3925
NSN 6645-00-391-6264
NSN 6610-01-072-7922
NSN 5915-01-109-2921
NSN 5998-01-350-3208
NSN 6650-00-138-8605
NSN 5905-01-534-7894