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 6685-01-401-5360
NSN 5910-01-128-6668
NSN 6240-00-488-0278
NSN 6105-01-448-7843
NSN 5985-01-538-3719
NSN 5915-01-449-0859
NSN 5920-00-199-4050
NSN 5835-01-166-7420
NSN 5835-01-442-6482
NSN 5998-00-858-3156
NSN 5985-01-399-2544
NSN 5855-00-631-4565