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 6220-01-643-2284
NSN 5925-01-337-2362
NSN 5965-01-646-2840
NSN 5905-00-152-4080
NSN 6685-01-180-7697
NSN 5950-00-052-1742
NSN 6145-01-616-6600
NSN 5910-00-299-7869
NSN 5935-01-595-3138
NSN 6105-01-050-2473
NSN 5950-01-184-0400
NSN 6650-00-463-1514