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 5945-00-659-8630
NSN 5910-00-161-0928
NSN 6645-00-983-2046
NSN 5930-00-488-9179
NSN 6220-01-481-3827
NSN 5925-00-159-1544
NSN 2925-01-326-0908
NSN 6145-01-332-8076
NSN 5835-00-306-5240
NSN 5905-01-510-3803
NSN 6320-00-731-6134
NSN 6105-01-145-7360