CRL 4" Cast Iron Rubber Base Drilling Ring Sealants For new stainless steel installations

For new stainless steel installations and for surfaces restored with the CRL Restoration Kit

A Valuable Tool for Laminated Glass

The blade has proven to be extremely durable with a long life expectancy

Air action on cartridge plunger

CRL 4" Cast Iron Rubber Base Drilling Ring Sealants For new stainless steel installationsCast Iron Rings with Rubber Bases Retains Abrasive Grain Slurry Eliminates Putty Dam Use these CRL Rubber Base Drilling Rings to retain the abrasive grain slurry while the drill is rotating and cutting into the glass. The cast iron rings have rubber bases to hold them securely to the glass, providing a proper seal, and allowing the coolant to mix with the grain for quick, efficient drilling. They are available in four diameters, individually or as a