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 6135-01-422-1440
NSN 5855-00-237-4088
NSN 5999-01-055-5243
NSN 6320-00-450-7014
NSN 6150-00-359-2019
NSN 5930-00-473-0455
NSN 6240-01-173-7809
NSN 5945-01-472-4347
NSN 6650-00-074-0131
NSN 5999-00-369-1623
NSN 6645-01-359-5769
NSN 7035-01-221-7856