What you're looking for is called anaerobic flange sealant. It's used for machined metal surfaces with gaps of 0.001" or less and cures in the absence of air. Permatex makes a comparable product, Anaerobic Flange Sealant, available at PartSource/Canadian Tire. https://www.permatex.com/products/gasketing/permatex-anaerobic-flange-sealant/Thanks, looks like a possible alternative. I was able to order in a bottle of the 574 from Toronto through McMaster-Carr. Part number 51531, retails for $17.99 shown below.