Overview Reviews Product Description Flange gaskets are designed to be used with flat face flanges.The red silicone flange gaskets are weather resistant, non-toxic, and feature a wide working temperature range.These gaskets are commonly found in de-watering applications but are acceptable for use in a variety of industrial applications.When selecting a gasket, always confirm material compatibility with product being conveyed. Greenline Industrial Fitting Catalog New Greenline Industrial Fitting Catalog Product Videos Custom Field Product Reviews Write a Review Write a Review × Greenline 4" 150 LB Red Rubber Flange Gasket G0019RG-400 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *