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 5935-01-488-1402
NSN 4140-01-229-2088
NSN 6645-01-029-4525
NSN 6320-00-725-0754
NSN 6145-00-452-4501
NSN 5950-00-242-7849
NSN 5895-00-153-2595
NSN 5945-01-394-9482
NSN 4140-00-205-6491
NSN 5895-01-362-8195
NSN 5975-01-447-3768
NSN 5985-01-254-1833