Rigid Pan Graphite Felt Cylinder for Crystal Furnace Hot Zone

Rigid Pan Graphite Felt Cylinder for Crystal Furnace Hot Zone. Rigid PAN-based graphite felt cylinder for hot-zone insulation barrels. Graphitized / rigid form for self-supporting furnace structures. Carbon at least 99% with ash up to 500 ppm; processing at least 2200 celsius degree. Suited for photovoltaic crystal growth furnace insulation cylinders. Cylinder geometry reduces soft-felt sag in vertical hot zones. Dimensions can be machined or formed to customer drawings. Pairs with soft felt liners for layered thermal protection. Consistent lot-to-lot quality with material certificates on request. Slots 8 filled with factory/delivery credentials.