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 5999-00-816-9670
NSN 5910-00-328-2174
NSN 5996-00-248-7061
NSN 5925-01-140-6920
NSN 6220-00-496-8592
NSN 5960-01-435-0677
NSN 5930-01-455-9622
NSN 6135-01-059-4055
NSN 5965-00-710-5764
NSN 5915-01-633-9845
NSN 5905-00-931-7685
NSN 5950-01-446-1106