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 5930-00-120-9365
NSN 5965-00-964-1756
NSN 5960-01-124-0182
NSN 6620-00-160-0844
NSN 5935-00-276-9413
NSN 5935-01-038-3816
NSN 6130-01-086-9647
NSN 5975-01-203-2127
NSN 6685-00-150-2779
NSN 5910-01-604-2637
NSN 2925-01-476-3224
NSN 6645-00-108-6479