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 5999-01-153-8759
NSN 5935-01-493-2635
NSN 5945-00-431-8481
NSN 6645-01-522-3754
NSN 6145-00-188-3657
NSN 5985-00-725-3867
NSN 5960-01-632-6576
NSN 5930-01-100-0818
NSN 5960-00-400-2222
NSN 6145-01-546-6892
NSN 5996-00-583-0796
NSN 6610-01-120-7670