SEAL-TYTE Boiler Sealer

Liquid boiler sealer for all steam systems.  SEAL-TYTE is recommended for sealing leaks in new or old low pressure steam boilers including all one or two pipe house heating systems, and vapor vacuum systems. SEAL-TYTE saves time and money in repairing small leaks caused by sand holes, defective castings, and imperfect pipe threads.  The sealer can also be used in sealing leaks above the boiler water line (See the Directions for Use).  SEAL-TYTE prevents the formation of scale and rust which can both decrease boiler efficiency and increase fuel consumption. This unique pressure sensitive product is formulated to go directly to the source of the leak and quickly seal without gumming up zone valves or other working mechanisms. SEAL-TYTE is designed to seal leaks, while conditioning and lubricating the system for top performance.  Due to SEAL-TYTE’s superior strength, boiler systems require less SEAL-TYTE than most all other sealing compounds on the market. See SEAL-TYTE Boiler Sealer recommendation chart.

SEAL-TYTE will mix instantly with the water in the boiler. When water in the boiler leaks through the crack or fault in the system, the mixture will begin to vaporize. The oxygen in the air will create a reaction with SEAL-TYTE, which will cause it to form into a solid. The heat from the boiler strengthens the reaction, further reinforcing the seal. Once the reaction is completed, SEAL-TYTE will expand and contract with the metal of the boiler.

RECOMMENDATION CHART

Approximate BTU Equivalent
Boiler Rating Square Feet of Steam
SEAL-TYTE Required (Quarts) 
350 85,000 ½
600 144,000 1
1,200 288,000 2
2,400 576,000 4
3,000 720,000 5
8,000 1,900,000 8
12,000 2,880,000 10
15,000 3,600,000 12
20,000 4,000,000 16
50,000 12,000,000
40
 
SEAL-TYTE” QUANTITY
RECOMMENDATION CHART
FOR UNKNOWN BOILER RATING
Number of
Apartments
Approximate
Square Feet of
Radiation
SEAL-TYTE
Required
Quarts
1-4 800 1
8 1,200 2
16 2,200 3
30 4,000 5
70 10,000 8
120 17,000 14

 

SEAL-TYTE fills and seals holes and cracks in steam boilers.  If the leak is excessively large, seal cracks on the boiler with Heat-Tyte Furnace Cement and seal threaded joints with Seal-Unyte Thread and Gasket Sealer.

Not for use in boilers containing anti-freeze.

Made in the U.S.A.

Safety Data Sheets

SEAL-TYTE

Spec Sheets

SEAL-TYTE

Product Features

No Product Features Found.
Product Name Product Code Size Container Items Per Case Case Weight UPC Code
SEAL-TYTE STS1 Gallon (3.785 L) Metal Can w/ Handle 4 46 lbs. (20.9 kg) 688544010350
STS32 Quart (.95 L) Plastic Jug w/ Spout 12 40 lbs. (18.1 kg) 688544320350

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