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 5996-00-438-0153
NSN 5945-00-280-0938
NSN 6105-00-166-9745
NSN 6620-00-862-5567
NSN 4140-01-591-0616
NSN 5905-00-266-8401
NSN 6620-01-106-2814
NSN 6645-01-383-1083
NSN 5990-01-299-2014
NSN 5945-01-437-5048
NSN 6135-01-496-5810
NSN 5855-01-464-3152