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 7035-00-052-2188
NSN 5985-01-449-2992
NSN 5905-00-492-7894
NSN 5925-01-462-0068
NSN 6685-00-126-3741
NSN 6220-01-237-6776
NSN 5895-00-850-4805
NSN 5835-01-003-8076
NSN 6645-01-414-6125
NSN 5855-01-165-2177
NSN 6685-00-891-5986
NSN 5935-00-285-2767