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 5835-00-554-0399
NSN 6145-00-912-2616
NSN 6650-01-412-1040
NSN 6105-01-113-3889
NSN 6240-01-112-7577
NSN 5925-01-609-9826
NSN 6135-01-500-0572
NSN 5855-00-327-2112
NSN 6645-01-320-3311
NSN 4140-01-043-4181
NSN 5835-00-192-4843
NSN 5930-01-031-1907