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 6135-01-433-2062
NSN 5998-01-301-0120
NSN 5990-01-557-4793
NSN 5999-00-218-4743
NSN 5950-00-583-4088
NSN 6105-01-570-0351
NSN 6105-00-314-5905
NSN 2925-01-058-1718
NSN 5960-01-135-0463
NSN 5930-01-654-8001
NSN 6105-01-389-3844
NSN 6620-00-244-0965