Home Depot - $8.88 for a lifetime supply!
Super Lube
Model # 98003
3 oz. Tube Heat Sink Compound
Super Lube Silicone Heat Sink - 3 oz tube. Silicone compound blended with thermally conductive, fine metal oxide powders. Will not harden or melt. Will not react to rubber or plastic. Non-toxic.
Temperature range from -45 degrees F to +500 degrees F
High dielectric strength
Excellent heat transfer efficiency
Viscosity stable
Radio Shack - $2.00
RadioShack® Silicone Base Heat Sink Compound (2-Pack),
Model: 12761372
Catalog #: 2760255
[This message has been edited by Pondski (edited 04-25-2015).]