Secure pipes, cables & more to struts & channels using Discount Strut Accessories Blue High Temp. 304 Stainless Steel Cush-A-Nator® 2.875" diameter for a 2-1/2" Pipe Size. The thermoplastic vulcanized material cross-linked with high perfromance rubber & thermoplastic elastomers provides the highest operating termperature range in the indsutry.