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 2925-01-551-5375
NSN 6320-00-731-6134
NSN 5910-00-016-0622
NSN 6650-01-022-9523
NSN 5855-01-394-3688
NSN 5835-00-051-9092
NSN 5998-00-923-3369
NSN 5910-01-110-5966
NSN 5915-00-158-5380
NSN 5945-00-362-3265
NSN 5945-01-220-2271
NSN 5990-01-646-8048