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 4140-01-278-3251
NSN 5998-00-633-5169
NSN 6685-01-287-7288
NSN 5945-01-655-4343
NSN 5990-00-615-5413
NSN 5935-00-471-7312
NSN 6135-00-593-6831
NSN 5950-01-272-9689
NSN 6240-01-629-7381
NSN 6220-00-343-0182
NSN 6240-01-054-2289
NSN 5935-01-592-4439