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 7035-01-584-7741
NSN 5945-00-015-1536
NSN 6135-01-370-2599
NSN 5990-01-278-9985
NSN 5998-00-330-7060
NSN 5910-01-433-3399
NSN 6220-00-515-6998
NSN 4140-00-459-9045
NSN 6150-00-843-5905
NSN 6135-01-167-7604
NSN 2925-01-087-4184
NSN 5910-01-053-8877