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 6240-00-698-5822
NSN 5930-01-368-5190
NSN 5996-00-702-5664
NSN 5960-01-101-5672
NSN 5915-00-689-4575
NSN 6145-01-310-8597
NSN 6130-00-482-3848
NSN 5855-01-630-8075
NSN 6145-00-411-7948
NSN 6610-01-631-1184
NSN 6105-00-647-3955
NSN 6105-00-871-9058