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 5990-01-476-0722
NSN 5930-00-515-7655
NSN 5930-00-541-8594
NSN 5996-01-453-0752
NSN 6150-01-445-0388
NSN 2925-01-440-7617
NSN 5945-00-846-0832
NSN 6620-01-130-3139
NSN 5835-00-614-0650
NSN 5950-00-527-6896
NSN 6320-01-232-4664
NSN 5945-01-620-9587