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 5945-01-168-1004
NSN 6620-00-022-8056
NSN 6135-01-614-8028
NSN 5925-01-152-1188
NSN 7035-01-069-3537
NSN 6135-01-442-4581
NSN 5945-01-538-0170
NSN 4140-01-466-4284
NSN 5895-00-420-0796
NSN 5960-01-578-5537
NSN 5960-00-960-6805
NSN 6685-00-848-7705