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 5905-00-846-1119
NSN 6150-00-398-6527
NSN 6150-01-367-1923
NSN 6650-00-216-6365
NSN 5930-01-506-5502
NSN 2925-00-684-7708
NSN 6110-00-069-2942
NSN 5950-01-203-4445
NSN 5996-00-583-9498
NSN 5950-01-418-9178
NSN 6135-01-265-1384
NSN 5999-01-453-6486