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 5935-01-262-9765
NSN 5925-01-151-2780
NSN 2925-01-364-7926
NSN 6620-01-443-8431
NSN 6220-01-221-7748
NSN 2925-01-147-6688
NSN 6135-01-463-2445
NSN 5950-00-134-2944
NSN 6240-00-816-6749
NSN 6220-00-368-4945
NSN 6110-01-065-3716
NSN 5855-00-100-9003