Firwin Wrap is a multipurpose, flexible, and1” thick fiberglass insulation wrap that can be used in many applications. It can wrap around a thick walled exhaust pipe, thin walled exhaust tubing, expansion joints, stove pipe, or any other hot surface. The overall blanket temperature rating is 1100°F / 593°C. The inner surface is designed for direct exposure to this temperature. The outer protective surface which is water and oil resistant can safely be exposed to temperatures of 500°F/260°C. The wrap comes with stainless steel rivets along its length, and is supplied with lacing wire. The wrap is fastened into place by looping the wire along the rivets. Wire cutters are recommended to cut away any excess wire. As an alternative to lacing wire, quick release springs can be ordered as the wrap fastening method. The springs are installed on the rivets, and do not require any wire cutters. Note that there is a small price premium for the springs fastening.

Gloves and protective eye wear are recommended for installation, and can be ordered on the accessories page. Wire Twist Pliers are also available as an option on the accessories page...


When selecting the correct size, here are some brief notes to keep in mind.

• The Diameter is the distance across the circle and the Circumference is the distance around the circle.
• The diameter on the outside of the pipe (“OD” for short) can vary significantly from the inside diameter of the opening (“ID” for short). Firwin Wrap is ALWAYS based on the Outside Diameter (“OD”).
• Sometimes it is easier to measure a Diameter and sometimes it is easier to measure a circumference. Our part description includes both the Outside Diameter (“OD”) and the Outside Circumference (“Circ.”). Note that the “Circ.” dimension is rounded off to the closest ¼”.