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 5998-00-172-2303
NSN 5910-00-856-6934
NSN 5855-00-408-2611
NSN 5996-01-512-0800
NSN 6645-00-411-3733
NSN 5999-01-573-7184
NSN 5935-01-156-6824
NSN 6130-00-516-3559
NSN 5930-01-427-9851
NSN 6105-01-396-5634
NSN 5935-00-345-9394
NSN 5998-01-151-3183