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 6645-01-254-0490
NSN 5895-01-054-3799
NSN 6650-01-139-9534
NSN 4140-00-267-8813
NSN 5925-00-872-3028
NSN 5996-00-156-5967
NSN 5915-01-221-6482
NSN 5975-00-473-7859
NSN 5945-01-150-4620
NSN 5960-01-365-5729
NSN 5999-01-445-1136
NSN 7035-01-227-7492