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 6610-00-186-9180
NSN 5915-01-396-7607
NSN 6145-00-318-9206
NSN 6240-01-619-5774
NSN 5925-01-307-4455
NSN 5960-01-015-0381
NSN 6130-00-025-9448
NSN 4140-00-249-5603
NSN 5950-01-161-1540
NSN 5998-01-146-5298
NSN 5925-00-840-7058
NSN 5998-01-441-2307