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 6105-01-477-4744
NSN 6620-01-512-0132
NSN 6130-01-225-5042
NSN 5895-00-837-3441
NSN 6645-01-157-9080
NSN 6240-01-472-5577
NSN 6135-01-455-7947
NSN 5915-00-829-9858
NSN 5998-01-035-7844
NSN 5990-01-250-4198
NSN 6620-01-219-9413
NSN 5990-01-448-2751