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 Fiberfrax insulation products: Fiberfrax is a trade mark of the Unifrax Corporation and covers a wide variety of
alumina-silicate insulation products that replace asbestos, usually with much higher insulating value for a given thickness. Using the products below, I have been able to make my Stanley completely asbestos free. All
products, except the tape, have a 2300 degree F continuous use temperature.
#249-250 Fiberfrax 550J Paper: This is an alumina-silicate fiber in a non-woven matrix with
an organic binder system. The ceramic fibers are randomly oriented forming uniform, flexible, light weight sheets. In these thicknesses it feels more like felt than paper. It replaces sheet asbestos in
places like wrapping a boiler, insulating a burner pan or lining a hood. It does not retain water, so if wet by water or steam all physical properties are restored upon drying. However unlike asbestos you
cannot wet it, roll it into a ball or stuff it into a crack and have it dry and conform to a new configuration, nor can you glue it to the inside of your hood with wall paper paste. Contact cement
must be used for this. 24" wide, sold by the linear foot.
# 251 Fiberfrax Caulk:
Sold in caulking tubes, this material is great for sealing cracks around the burner and for packing the valleys on the surface of
the burner grate. It consists of ceramic fibers dispersed in a very sticky sodium silicate based refractory binder requiring only drying to produce a hard surface, low thermal conductivity
insulation. It has excellent adhesion to metal surfaces and unlike asbestos products, very low shrinkage. It dries hard
like furnace cement, yet unlike furnace cement is easily removed by prodding with a screwdriver. Care should be taken to prevent freezing the product before use or it will harden in the tube.
Therefore I cannot ship it during the winter months. Sold in caulking gun sized tubes.
#262 Fiberfrax Rope: This is a 3/8" diameter, three ply rope made from Fiberfrax wicking which makes a great seal between the burner and the boiler. Simply
lay a length of this soft, resilient rope on the edge of your burner pan between the pan and the liner before securing the burner to the boiler. Sold by the
foot. 3' for 14" burner fitting inside the boiler ring, 4' for 16", 5' for 18", 6' for 20" & 23", 7' for 26". Add 1' if your pan is fitted outside of the boiler.
#261 Flexweave Tape: 1/16" x 1" An exceptionally durable woven textile made from  textured fiberglass. It is an excellent insulator with very low thermal conductivity; ideal for spirally wrapping steam lines. Far superior in
strength to asbestos tape, it resists water, is reusable and good for continuous use to 1000 degrees F. Available only in 100' rolls which is enough to wrap over 30' of 1/2" pipe steam line.
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Vintage Steam