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 6130-01-345-4837
NSN 7035-00-408-8170
NSN 5925-00-086-9288
NSN 6220-01-535-4677
NSN 5999-01-240-2204
NSN 5965-00-834-6298
NSN 6645-01-437-9017
NSN 5855-01-241-1054
NSN 6610-01-420-7817
NSN 5965-00-752-5823
NSN 6150-01-189-4974
NSN 6220-00-248-4483