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 5960-01-446-4446
NSN 6320-00-456-0836
NSN 5835-01-632-6627
NSN 5950-01-579-9472
NSN 5910-01-633-9963
NSN 6150-01-187-5824
NSN 5915-01-119-6184
NSN 6110-01-428-7317
NSN 5945-00-161-4014
NSN 5996-01-627-5094
NSN 5996-01-572-4895
NSN 5905-01-634-0595