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 4140-00-660-8699
NSN 5996-01-527-9119
NSN 5965-01-388-3492
NSN 6220-01-105-9055
NSN 6240-00-594-7138
NSN 2925-01-446-6976
NSN 5998-01-479-9641
NSN 4140-01-342-7930
NSN 5935-01-441-0540
NSN 6645-00-542-1734
NSN 5996-00-583-9498
NSN 5999-01-167-4031