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 5985-01-241-4847
NSN 6685-01-365-3798
NSN 5835-01-178-4154
NSN 5960-01-187-3103
NSN 5855-01-388-2424
NSN 4140-00-526-4505
NSN 5930-00-569-9334
NSN 6685-01-157-4454
NSN 5985-01-284-8903
NSN 5835-00-996-2912
NSN 4140-00-060-8693
NSN 2925-00-464-7892