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: Parts of armored fighting vehicles,motorized, whether or not fitted with weapons
NSN 5950-01-642-0916
NSN 5895-01-196-7404
NSN 5835-01-157-5886
NSN 5930-01-582-4540
NSN 5925-01-252-9722
NSN 5975-00-583-8625
NSN 5915-01-280-5463
NSN 2925-01-629-9416
NSN 6105-00-893-3139
NSN 5855-01-260-7445
NSN 6320-01-450-7513
NSN 6105-01-570-5907