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 5998-01-218-0305
NSN 6110-00-601-0641
NSN 6610-01-400-3880
NSN 5915-01-175-5085
NSN 6650-01-039-2858
NSN 6685-01-106-0049
NSN 5965-01-328-7979
NSN 6620-01-041-8567
NSN 5996-01-437-8824
NSN 5990-00-932-3070
NSN 6320-01-116-3980
NSN 6320-00-790-4844