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 6685-01-097-6801
NSN 5998-01-485-2085
NSN 6135-00-777-5562
NSN 5855-00-548-4742
NSN 5950-00-670-0402
NSN 5935-01-278-0399
NSN 5905-01-317-3503
NSN 6240-01-652-3751
NSN 6610-00-155-1334
NSN 5998-01-170-7718
NSN 5985-01-013-9044
NSN 6610-01-365-7796