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 2925-01-230-8057
NSN 5930-01-417-8397
NSN 5835-01-471-2861
NSN 6130-01-216-9169
NSN 6135-01-020-3805
NSN 5960-00-723-2793
NSN 7035-00-480-6767
NSN 5895-00-404-3273
NSN 7035-00-616-4410
NSN 6105-01-391-0566
NSN 5915-01-085-5820
NSN 6620-00-130-0815