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 5930-01-068-1795
NSN 4140-01-316-2217
NSN 5965-01-416-4059
NSN 5996-01-223-5896
NSN 6320-01-252-2307
NSN 5905-00-126-3112
NSN 6130-01-569-7578
NSN 5930-01-361-9027
NSN 5835-01-446-6065
NSN 6135-01-255-9129
NSN 6610-01-306-8530
NSN 5925-00-498-4084