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 6645-00-814-1706
NSN 6130-01-175-2092
NSN 6240-01-130-1505
NSN 6650-01-514-0240
NSN 5920-00-916-3902
NSN 5965-01-035-6842
NSN 6150-01-167-8315
NSN 5990-00-146-3534
NSN 5996-00-754-2840
NSN 5945-01-644-1987
NSN 5915-00-798-9141
NSN 5945-01-145-9703