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 5945-01-375-7841
NSN 6105-01-276-5049
NSN 6145-01-327-3328
NSN 2925-01-122-7812
NSN 6240-01-409-2465
NSN 5915-00-170-6775
NSN 5930-01-309-3786
NSN 5996-00-109-5986
NSN 6240-01-375-6119
NSN 5920-00-081-9156
NSN 6110-00-974-2046
NSN 5945-00-245-7693