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 5915-01-139-0507
NSN 6320-01-239-7647
NSN 5998-00-275-7221
NSN 5998-01-168-9782
NSN 5960-00-636-4834
NSN 5950-01-603-0101
NSN 6685-00-569-1764
NSN 6240-01-471-0391
NSN 5985-01-565-4900
NSN 5835-01-511-5337
NSN 6130-00-852-5178
NSN 6130-00-751-8988