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 5915-01-439-5539
NSN 6135-01-210-8715
NSN 5935-01-117-0104
NSN 5985-01-347-4418
NSN 5990-01-443-2931
NSN 5935-01-283-2890
NSN 5915-01-445-9523
NSN 6220-01-476-9371
NSN 5935-01-146-3413
NSN 6645-00-143-1567
NSN 6130-00-020-9289
NSN 5835-01-381-2683