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 2925-01-454-2046
NSN 5999-00-188-3018
NSN 2925-00-005-1618
NSN 5935-01-454-8172
NSN 5975-00-728-6933
NSN 6685-00-594-4796
NSN 6220-00-955-9961
NSN 5905-01-417-3141
NSN 5835-01-414-3258
NSN 5998-01-087-4810
NSN 6220-01-116-2411
NSN 6220-01-363-0125