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 6620-01-439-5473
NSN 6145-01-095-6556
NSN 4140-01-435-6198
NSN 5950-01-476-9446
NSN 6650-01-212-3964
NSN 6130-00-942-8775
NSN 5998-00-260-9515
NSN 5895-01-381-8210
NSN 6685-01-463-0554
NSN 5998-01-281-5088
NSN 5945-01-378-9767
NSN 2925-01-127-0167