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 6320-01-006-6138
NSN 5975-00-583-8625
NSN 2925-00-087-2465
NSN 5998-01-336-1707
NSN 6240-01-485-0577
NSN 5905-01-532-4671
NSN 5930-01-309-1480
NSN 6320-01-294-7161
NSN 2925-00-026-0005
NSN 6105-01-253-8858
NSN 7035-01-152-6053
NSN 5910-01-398-7548