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 6150-00-118-3362
NSN 7035-00-870-0290
NSN 4140-00-790-4691
NSN 5950-01-139-0123
NSN 5925-00-917-3667
NSN 6650-00-647-1085
NSN 6150-00-591-7994
NSN 6145-01-064-2480
NSN 5950-00-489-7743
NSN 5915-01-502-7550
NSN 6650-01-126-6238
NSN 6135-01-438-0228