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 5965-00-142-9052
NSN 6650-00-134-5130
NSN 5905-00-221-4483
NSN 6110-00-828-1820
NSN 5930-00-132-5134
NSN 6105-01-198-2642
NSN 5998-00-299-2740
NSN 2925-00-631-1709
NSN 6320-01-519-7019
NSN 6110-01-025-0507
NSN 6240-00-974-5925
NSN 5945-00-900-5518