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 5965-01-230-5521
NSN 6145-01-322-3688
NSN 4140-00-917-2052
NSN 5945-00-932-5219
NSN 6130-00-415-1509
NSN 5998-01-008-2326
NSN 6220-00-431-7727
NSN 5950-00-226-0009
NSN 4140-01-281-8832
NSN 5930-00-530-5193
NSN 6105-01-083-6953
NSN 6150-00-913-1321