Description

Alvin HEAT BLOCK is an insulation compound with unique heat absorbing properties which insulate against heat transfer during welding, soldering, brazing or other heat treatment. The heat absorption properties protect closely soldered parts, valve gasketing, thin gauge metal, and other materials which could be damaged during repair or installation work. HEAT BLOCK is used to protect plastic drain pipes in close proximity to metal pipes being replaced or soldered. HEAT BLOCK prevents distortion to light gauge metals, protects rubber and plastic components, and painted or finished surfaces while soldering, brazing or welding.

This non-toxic material may be formed around or on the surface of metal, or spread onto surfaces which might be damaged by heat or flame during welding or soldering. It is easily removed by wiping with wet rags or running water.

Directions

Clean surface to which Alvin HEAT BLOCK is to be applied, removing all dirt and grease. Apply a thick layer of HEAT BLOCK (1/2" to 3/4" thick), completely surrounding the area to be welded or soldered.

Press tightly to remove air pockets and voids. Once repair is complete, remove HEAT BLOCK with a damp rag or running water. HEAT BLOCK should leave no stain or marks. HEAT BLOCK contains no toxic materials and is harmless to skin. HEAT BLOCK is nonflammable and gives off no toxic fumes when exposed to heat.

HEAT BLOCK is packaged in pint, quart, gallon and five-gallon plastic containers.  Now available through Fastenal Company locations nationwide!

Applications

Alvin HEAT BLOCK is used in welding, automotive, HVAC/R, plumbing and shipyard industries, as well as other specialized industries. HEAT BLOCK will:

Automotive

• protect painted surfaces, wiring, tubing (plastic & rubber)
• protect against distortion of welded stainless

Welding

• prevent surface discoloration of welded stainless
• protect surrounding surfaces from flame
• prevent damage to valves in close proximity to weld area
• prevent spatter from adhering to surrounding surfaces

Plumbing

• prevent damage to adjoining valves and washers during sweating and soldering
• protect surrounding surfaces from flame and heat
• protect pipe insulation from flame and heat damage

Shipboard