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 5925-00-139-9706
NSN 6220-01-125-3860
NSN 6135-01-142-2417
NSN 6610-01-602-9619
NSN 6130-00-995-6542
NSN 5930-01-490-3849
NSN 5915-01-198-3921
NSN 5920-00-648-6767
NSN 6135-01-529-8523
NSN 5945-01-445-5537
NSN 6610-01-151-1540
NSN 5990-01-048-9536