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 5985-00-281-0810
NSN 6130-00-576-4867
NSN 6645-01-459-9586
NSN 6650-01-501-2807
NSN 6620-01-224-9331
NSN 5960-00-912-1114
NSN 2925-00-017-9807
NSN 5985-00-567-8929
NSN 6620-01-630-3494
NSN 5945-00-180-8374
NSN 6105-01-317-0342
NSN 6145-01-254-4505