High Temperature Gaskets for Flasks

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Graphite gaskets designed for use in vacuum casting applications, providing a reliable seal at the flange and casting chamber. The graphite material withstands temperatures up to 1 200°F (649°C), making these gaskets well-suited for the demanding conditions of investment casting. Graphite gaskets are exceptionally long-lasting and remain functional even as they wear down to near paper-thin thickness — as long as they are handled carefully to avoid cracking or breakage. Features Graphite construction withstands temperatures up to 1200°F – 649°C Designed to seal the flange and casting chamber during vacuum casting Long service life — usable even when worn to near paper-thin thickness Available in multiple diameters and thicknesses to fit a range of flask sizes Specifications Material Graphite Maximum Temperature 1200°F (649°C) Application Vacuum casting — flange and casting chamber sealing Available Options Part # Diameter Thickness 121.831 3" 1/8" 121.832 3-1/2" 1/8" 121.833 3-3/8" 1/8" 121.834 4-1/2" 1/8" 121.835 4-1/2" x 5-1/2" 1/16" 121.836 5" 1/8" Notes Graphite gaskets are fragile and subject to breakage if mishandled. Always handle with care, avoiding drops or impact that could cause cracking. Proper handling is essential to achieving maximum service life. Show more