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 6145-01-552-9050
NSN 5925-00-115-8114
NSN 4140-01-391-5839
NSN 5895-01-532-5726
NSN 4140-01-301-8729
NSN 5985-00-114-0010
NSN 5910-01-410-2850
NSN 4140-01-634-0330
NSN 6650-01-350-2515
NSN 5930-01-124-3454
NSN 5915-01-196-6016
NSN 5915-00-156-7877