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 6105-01-184-3209
NSN 6650-01-466-9503
NSN 5990-01-288-7393
NSN 6240-01-519-2935
NSN 6135-01-443-4484
NSN 5985-01-197-3011
NSN 6135-01-014-9755
NSN 5915-00-839-0031
NSN 5960-01-037-3297
NSN 5925-01-200-7813
NSN 6240-01-193-6545
NSN 7035-01-340-9640