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 5925-01-100-3631
NSN 6150-00-013-5613
NSN 6130-01-504-2674
NSN 5895-01-159-7854
NSN 5950-00-097-1310
NSN 6110-01-211-6002
NSN 6620-01-077-8033
NSN 5930-00-383-5656
NSN 5930-01-368-8557
NSN 6130-01-257-0555
NSN 6650-01-548-7073
NSN 6320-00-405-2348