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 5985-01-607-2135
NSN 6145-01-412-0926
NSN 5835-00-644-4512
NSN 2925-01-049-8906
NSN 5925-00-235-8524
NSN 6320-01-119-3935
NSN 5985-01-527-1141
NSN 6650-01-064-6196
NSN 4140-01-446-6007
NSN 7035-00-421-8710
NSN 5930-00-827-0034
NSN 6650-01-452-1167