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 6130-01-627-4124
NSN 6145-00-635-9957
NSN 6685-00-859-3403
NSN 5998-01-522-6836
NSN 4140-01-537-5764
NSN 5975-01-217-1581
NSN 5996-00-494-0763
NSN 7035-01-206-2623
NSN 6610-01-607-8892
NSN 5990-01-225-5374
NSN 6145-00-125-0742
NSN 6610-00-832-3134