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™ HTS Pak

Non-Curing Multi-Purpose Sealant


Check Seal™ HTS Pak is a heavily fibrous sealant designed for use at temperatures up to 700˚F. HTS PAK works great for a wide variety of leaks with its fibrous characteristics, such as leaking valve seats, this sealing is accomplished without affecting valve operation. Other uses include steam valve packings, steam union leaks, steam wire wraps and steam valve bonnets.

Typical Characteristics

Applications Aliphatic hydrocarbons, asphalt, hot oil, steam and geothermal
Note: For chemicals, refer to compatibility chart  
Temperature Range Up to 700°F (371°C)
Limitations Should not be used at temps over 700°F (371°C)
Appearance Dark gray fibrous sticks
Penetration (ASTM D217) 70-80
Injection Characteristics 500 psi, flows well with minimum hydraulic pressure
Cure Slight cure at higher temperatures
Long Term Changes Some loss of carrier with pressure and temperature; reinjection may be required
Storage Keep in dry area


Packaging Information

Item Number Unit Size   Quantity
CS0833007BP 1 gal  7 lb 
CS0833035PB 5 gal  35 lb
CS0833001PL 5/8” x 4" plugs 10 per pouch 
CS083316JBX “J” stick 1-3/8” x 8-1/2" 16 per box


Do Not Use On Oxygen Services.

Special packaging sizing available upon request.

More Non-Curing