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 6135-01-441-0402
NSN 5998-01-323-8673
NSN 6645-01-093-5015
NSN 6320-00-731-6134
NSN 6145-00-132-4800
NSN 6150-01-294-2867
NSN 4140-01-224-6994
NSN 6130-01-449-1088
NSN 5990-01-251-7313
NSN 5915-00-285-2213
NSN 5945-00-159-7628
NSN 5855-01-391-7077