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 6320-00-115-0883
NSN 6220-00-100-4937
NSN 5835-00-130-6404
NSN 6650-00-334-5901
NSN 6610-01-217-4162
NSN 5930-01-492-5858
NSN 5985-01-135-1343
NSN 6685-00-374-4021
NSN 6620-01-195-4602
NSN 5950-01-351-5365
NSN 5905-01-467-2816
NSN 6150-01-599-5436