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 6645-01-098-5077
NSN 5975-00-473-5595
NSN 6105-01-498-4994
NSN 5855-01-632-5485
NSN 7035-01-390-1132
NSN 6685-00-547-6218
NSN 5930-00-398-1517
NSN 5965-00-368-8204
NSN 5835-00-733-9145
NSN 6220-01-611-1224
NSN 5999-00-442-2820
NSN 5920-01-196-0933