● High silica fiberglass mesh filter is weaved by high silica fiberglass yarn and coated with special refractory coating.Silica mesh filters are ideal for in-mold filtration of gray, malleable, white, compacted graphite and ductile cast irons.The filter screen can be cut into squares of any size with scissors, placed under the sprue cup, on the lap surface of the runner, and on the lap surface of the runner and the inner runner, and press it with a box.