Check Seal™

Check Seal™ provides an array of products for online leak protection. This line offers both curing and non-curing sealants and packing.

Check Seal™ 4AB

Two-Component Rubber Sealant


Check Seal™ 4AB is a two-component sealant that cures to a relatively hard, but flexible solid. The most common usage of Check Seal™ 4 is in repairing water, steam leaks to temperatures as high as 550˚F. It can be used with acids, alkalis, hydrocarbons, ammonia and BFW. 

Typical Characteristics


Acids, alkalis, hydrocarbons, ammonia, water, steam, bfw
CAUTION: Some of the additives in the steam and bfw can kill the cure.

Note: For chemicals, refer to compatibility chart  
Temperature Range 65°F to 550°F (18°C to 288°C)
Limitations Should not be used at temps over 550°F (288°C)
Appearance Blue and beige viscous liquids
Specific Gravity 1.3
Volume 191 cu. in – 1 gal kit
Volume 14 cu. in – 10 oz. kit
Injection Characteristics 500 psi, flows well with minimum hydraulic pressure
Cure Rate depends on temperature, 65°F minimum
Long Term Changes None
Storage 70°F or lower


Packaging Information

Item Number Unit Size   Quantity
 CS400111  1 gal kit, 10 lb  
 CS400311 10 oz. kits   16 per box

Do Not Use On Oxygen Services.

Special packaging sizing available upon request.

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