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 5975-01-487-7319
NSN 5998-01-246-3465
NSN 5915-00-416-9716
NSN 5950-00-666-1887
NSN 6620-01-445-0535
NSN 5990-01-340-1306
NSN 6645-01-462-2101
NSN 6240-01-408-1212
NSN 6610-01-233-5857
NSN 7035-01-332-9582
NSN 5910-01-014-1213
NSN 5855-01-651-9576