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 5945-01-594-0571
NSN 2925-01-499-8720
NSN 6150-00-433-7693
NSN 6110-01-506-2835
NSN 5965-00-001-7593
NSN 6220-01-634-0660
NSN 6130-01-495-1499
NSN 5998-01-382-2096
NSN 6610-01-383-7419
NSN 5999-01-560-1733
NSN 5998-00-233-6392
NSN 6645-01-408-0011