Overview Reviews Product Description Flexible, gasketing material for use on rigid machined flanges with less than .015" gap. OEM approved - use where OEs specify "anaerobic" gasket (cures in the absence of air). Withstands temperatures to 300°F (149°C). Eliminates preformed, pre-cut, paper, rubber and cork gaskets. Flexes with flanges that move in service. Permatex 2018 Catalog Product Videos Custom Field USA part number 51531 Canadian part number 51550 Product Reviews Write a Review Write a Review × Permatex Anaerobic Flange Sealant 50ml Tube 51550 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *