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 5999-01-497-0825
NSN 5998-00-548-8297
NSN 6620-00-466-2314
NSN 4140-01-050-8096
NSN 6320-01-252-2307
NSN 5960-00-266-6741
NSN 5910-01-125-2671
NSN 5835-00-148-9719
NSN 2925-00-203-8735
NSN 5930-00-656-3232
NSN 7035-01-357-3726
NSN 6220-01-348-0677