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 6145-01-342-6322
NSN 6610-01-440-9913
NSN 5960-01-379-3947
NSN 5915-01-099-9068
NSN 5925-00-336-9150
NSN 5925-01-225-5774
NSN 5960-01-471-2656
NSN 6110-01-276-0985
NSN 6320-01-374-9924
NSN 6130-01-132-1871
NSN 6145-00-782-4420
NSN 6145-00-044-3584