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 6620-01-633-8443
NSN 6105-00-004-1276
NSN 6220-00-635-8818
NSN 5925-00-113-2715
NSN 5925-01-341-3159
NSN 6220-01-479-6262
NSN 6610-01-485-8973
NSN 6650-01-078-3184
NSN 5895-01-422-1130
NSN 5960-01-265-0354
NSN 5925-01-100-4029
NSN 6220-01-423-5559