Pipe Clamp: non metallic so by design it inhibits electrolysis

Kwik Block offers the leading fastening system to secure piping and tubing in corrosive or wet environments.  Kwik Block is a non metallic pipe clamp that naturally inhibits electrolysis, or galvanic action, caused by dissimilar metals, which is a leading cause of pipe system failure.

Critical Component Failures Associated with Pipe Supports - Causes and Preventions
Thielsch Engineering, Inc. http://www.thielschfes.com/media/1129/Critical%20Component%20Failures%20Associated%20with%20Pipe%20Supports-Ca.pdf

Corrosion at pipe supports: Causes and solutions
Corrosion at pipe supports is one of the leading causes of topside process piping failure.
http://www.stoprust.com/6pipesupports.htm