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 5996-01-421-6562
NSN 5915-00-926-2471
NSN 5998-01-370-4384
NSN 5925-00-100-0102
NSN 5920-01-155-7685
NSN 6220-01-027-1294
NSN 5996-01-503-3410
NSN 5975-01-231-4180
NSN 6610-00-963-9435
NSN 5998-00-243-7459
NSN 6645-01-314-2889
NSN 7035-01-143-0355