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™ 9R

Liquid Thermosetting Resin

Check Seal™ 9R is a viscous, liquid thermosetting resin that cures upon the application of heat to form a very hard-set solid sealant, blocking leak paths. As it begins to cure, it forms a chemically resistant, insoluble solid that is effective in thread and gasket applications to 650˚F and with added fibers can be used in applications to 1500˚F.

Recommended Uses
It is used in a wide variety of industrial applications including sealing threaded pipes or tool joints, gaskets, equipment joints and flanges.

Typical Characteristics


Steam, boiler feed water, acids, alkalis, ammonia, hydraulic fluids, hydrocarbons, refrigerants and propane CAUTION: Some of the additives in the steam and bfw can kill the cure.

Note: For chemicals, refer to compatibility chart  
Temperature Range 200°F to700°F (93°C to 371°C)
Limitations Should not be used at temps over 700°F (371°C)
Appearance Black viscous liquid
Penetration (ASTM D217) 415
Specific Gravity 1.15
Density (lb/gal) 9.6
Injection Characteristics

Pourable liquid; flows well with minimum hydraulic pressure if injected

Cure Hard cure over 250°F, rate depends on temperature
Long Term Changes None
Storage 70°F or lower; storage in freezer gives longer life


Packaging Information

Item Number Unit Size 
 CS900111 2 lb can
CS900311 45 lb pail
 CS900611 8 lb pail


Do Not Use On Oxygen Services.

Special packaging sizing available upon request.

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