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 5998-01-494-2592
NSN 5998-01-544-0012
NSN 6240-01-343-0065
NSN 6130-01-430-9573
NSN 7035-01-221-7856
NSN 7035-01-193-2667
NSN 5990-01-054-3332
NSN 5965-01-487-3247
NSN 5925-01-209-4948
NSN 7035-01-626-7763
NSN 5855-00-797-8217
NSN 5855-01-236-9645