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 5999-01-411-4529
NSN 5915-01-599-4159
NSN 5835-00-856-2437
NSN 6135-00-125-5265
NSN 6150-01-146-5463
NSN 7035-01-626-6034
NSN 5905-01-121-5468
NSN 7035-00-531-9925
NSN 6645-01-553-3599
NSN 5920-00-261-9848
NSN 6110-00-934-7943
NSN 5915-00-503-4842