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 5915-00-562-6652
NSN 6130-00-216-7376
NSN 6130-00-186-8460
NSN 6130-01-237-3295
NSN 5905-01-554-1202
NSN 5935-00-400-3191
NSN 6220-01-270-6070
NSN 5975-00-274-5720
NSN 6320-00-456-0836
NSN 5835-01-439-0180
NSN 5998-00-686-2152
NSN 6610-00-548-3452