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 5945-01-418-8094
NSN 5835-01-449-7511
NSN 5855-01-095-5299
NSN 6650-01-631-1955
NSN 6130-01-293-4650
NSN 5925-00-081-9135
NSN 6150-01-265-4093
NSN 6220-00-160-9372
NSN 5990-01-502-8209
NSN 5960-01-599-4726
NSN 6110-01-197-6954
NSN 5950-01-062-0877