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 6150-01-451-4049
NSN 5855-01-037-7342
NSN 6150-01-497-0377
NSN 6105-01-142-8501
NSN 6320-00-456-0836
NSN 5950-01-537-1110
NSN 5996-01-407-1458
NSN 5915-01-258-4911
NSN 5975-01-447-6439
NSN 6645-01-308-9349
NSN 6610-01-550-7794
NSN 5905-00-104-3478