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 5910-01-550-9709
NSN 5895-00-087-5522
NSN 6145-01-116-1274
NSN 6620-01-440-9810
NSN 6135-00-262-6807
NSN 5930-01-625-2401
NSN 5930-01-027-6533
NSN 5925-01-568-3131
NSN 5895-01-054-4790
NSN 6320-00-369-1333
NSN 5835-01-399-5820
NSN 5945-01-451-2589