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 5996-01-243-4072
NSN 6220-00-974-9305
NSN 6135-00-209-6918
NSN 5930-01-232-3621
NSN 6240-00-383-7668
NSN 7035-00-782-7046
NSN 2925-00-862-8550
NSN 5950-01-089-2443
NSN 6620-01-104-2699
NSN 6645-00-149-1100
NSN 5985-01-155-9716
NSN 6685-01-488-5138