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 6110-00-432-2709
NSN 5985-01-107-1134
NSN 6240-01-212-3529
NSN 5855-00-444-2298
NSN 5925-01-105-1879
NSN 5935-01-190-5887
NSN 5950-00-200-1110
NSN 4140-00-093-7679
NSN 5915-01-633-9845
NSN 6645-01-353-6863
NSN 5990-00-108-5400
NSN 5996-01-235-1643