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™ 9B & 9F

Thermosetting Sealant

Check Seal™ 9B & 9F are sealants with heavy fibers that cure upon the application of heat to form a very hard set solid sealant which blocks leak paths. Check Seal™ 9B is a thermosetting resin reinforced with a fibrous bulk material and Check Seal™ 9F is a thermosetting resin more heavily fibered material for improved sealing traits and higher temperature performance up to 1500°F.

Recommended Uses
It is used in a wide variety of industrial applications including sealing wire wraps, clamps and enclosures.

Typical Characteristics


Steam, water and a wide variety of chemical leaks

Note: For chemicals, refer to compatibility chart  
Temperature Range

9F: 250°F (121°C) to 1500°F (815°C)
9B: 200°F (93°C) to 800°F (426°C)

Limitations Should not be used at temps over 1500°F (815°C)
Appearance Black fibrous stick
Stick Volume 5/8” x 3.5” plug (1.1 cu in) “J” Stick (12.6 cu in)
Injection Characteristics

Sealant flows well 450 psi, with minimum hydraulic pressure

Cure Over 200°F hard cure; the higher the temperature, the faster the cure
Long Term Changes None
Storage 70°F or cooler; storage in freezer gives longer life


Packaging Information

Item Number Unit Size  Quantity
CS900511(9B) “J” stick 1-3/8” x 8-1/2” 16 per box
CS0839001PL (9B) 5/8” x 4 plugs 10 per pouch
CS900711(9F) 8 lb pail“J” stick 1-3/8” x 8-1/2” 16 per box
CS0839F01PL (9F) 5/8” x 4 plugs 10 per pouch 
CS0839BBLK 1 Gal Bulk  
CS0839FBLK 1 Gal Bulk  


Do Not Use On Oxygen Services.

Special packaging sizing available upon request.


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