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 6135-00-243-8330
NSN 5990-01-507-7495
NSN 5905-00-582-7031
NSN 5999-01-322-9023
NSN 5998-01-206-4672
NSN 6145-01-603-7952
NSN 6130-00-433-9422
NSN 5925-01-202-1786
NSN 5925-01-158-0762
NSN 6135-01-507-4346
NSN 5855-00-087-7833
NSN 2925-00-183-4390