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 6130-01-623-6642
NSN 5925-00-952-5824
NSN 5990-00-740-0249
NSN 6650-01-600-4843
NSN 6130-00-296-8697
NSN 5905-00-849-6810
NSN 6130-01-521-3712
NSN 5945-00-355-1158
NSN 6320-01-484-7734
NSN 5965-01-386-2988
NSN 6620-01-646-2751
NSN 6105-01-559-9353