Metal and ceramic usually expand differently with temperature. Rigidly locking them together can create high interface stress and ceramic cracking. Use appropriate clearance, compliant support or controlled movement when designing ceramic-to-metal assemblies.

Custom ceramic parts are generally more reliable when wall thickness is reasonably uniform and thick-to-thin transitions are gradual. Abrupt section changes can create drying, firing, shrinkage and thermal stresses even when the ceramic material itself is suitable.

Sharp internal corners, notches and abrupt geometric transitions create stress concentration in custom ceramic components. Use smoother radii and adequate edge distance where possible, especially for parts exposed to bending, thermal cycling or clamping.

A complete ceramic grid packing RFQ should include tower dimensions, module geometry, process chemistry, temperature, gas and liquid loads, fouling conditions, pressure-drop requirement, support details, orientation and replacement history. This allows the supplier to evaluate function—not just quote ceramic blocks by volume.

Ceramic grid packing replacement should confirm module dimensions, grid pitch, clear opening, wall thickness, open area, material, weight, orientation, layer arrangement, support interface and historical operating problems before approving an equivalent.