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 5990-01-601-0466
NSN 5999-01-484-7571
NSN 6320-00-194-4252
NSN 5935-01-069-8949
NSN 5915-01-336-9130
NSN 5905-01-509-4956
NSN 6685-01-081-4095
NSN 5930-01-651-6150
NSN 5975-01-012-4775
NSN 5999-01-581-9011
NSN 5965-00-021-5620
NSN 5960-01-505-2426