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 5905-01-421-4157
NSN 5998-01-392-1072
NSN 4140-01-261-7953
NSN 6650-01-369-5247
NSN 6620-01-140-0968
NSN 5905-00-925-2848
NSN 6240-00-696-0249
NSN 6610-00-785-4054
NSN 5915-01-335-8081
NSN 5925-00-080-2163
NSN 5930-01-230-3820
NSN 5960-00-913-6195