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 6610-00-308-9034
NSN 5945-01-138-1818
NSN 5999-01-491-5904
NSN 5975-00-518-7817
NSN 6320-01-415-0953
NSN 5930-01-530-3310
NSN 4140-01-579-3686
NSN 5945-01-551-0588
NSN 7035-01-026-0117
NSN 5935-00-113-9278
NSN 5925-00-627-2011
NSN 5996-01-541-4974