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 6135-01-512-8740
NSN 5935-01-099-9671
NSN 6150-01-146-4833
NSN 5950-00-982-8231
NSN 6130-00-104-5573
NSN 5835-01-178-4154
NSN 6130-01-344-4483
NSN 6685-01-249-5062
NSN 5999-01-591-3106
NSN 6220-01-008-7401
NSN 5935-01-005-2068
NSN 5895-01-421-5040