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 6610-00-468-1958
NSN 5855-00-862-3345
NSN 7035-01-477-2818
NSN 5915-01-245-2408
NSN 6145-01-381-2529
NSN 5999-01-601-9161
NSN 6320-00-908-6841
NSN 4140-00-379-4748
NSN 6130-01-063-7446
NSN 7035-01-426-4133
NSN 6685-01-535-4127
NSN 6610-01-501-4532