HS-331 Original Jensen Sure Seal Hand Sealer


Re-Introduction of the ORIGINAL Jensen Sure Seal Hand Sealer.

We see no end to the critical shortage of chips and other electronic components. This causes us to re-introduce our ORIGINAL Jensen Sure Seal hand sealer HS-331. Both the electronic JSS-500 and the mechanical HS-331 have exactly the same operating characteristics and either will more than satisfy your barrier material sealing requirements.

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  • Temperature setting 100°C too 300°C
  • Temperature remains constant
  • Both upper and lower bars heat
  • Consistent heat throughout bars
  • Five minute warm up
  • Heating up and ready lights
  • Light weight, three pounds
  • Spring assisted handles
  • Heating bars Teflon coated
  • Heating bars 12″ long & 3/4″ wide
  • Ten foot cord
  • 110 Volts 400 Watts


All parts defective in material and workmanship. Defects that have resulted from improper or unreasonable use or maintenance, accident or unauthorized tampering alteration or modification are not covered.

Limitation on Liability

Where permitted, the provisions of this Limited Warranty are in lieu of any other written warranty, whether expressed or implied, written or oral, including any warranty of merchantability of fitness for a particular purpose.

For How Long

The Jensen Sure Seal™ Limited Warranty lasts for one (1) year from the end user purchase date.

What We Will Do

We will, at our sole option, repair or replace any defective part within a reasonable period of time.

What We Will Not Do

Pay shipping or transportation charges from you to us.

What you must do to obtain Limited Warranty service

Return the product with proof of purchase and in the original packaging from an authorized Jensen Sure Seal™ dealer to Controlled Environment Packaging, Inc. 3951 Sovereign Drive Buford, Georgia USA 30518. Include your evaluation of the defect.

What you must do to obtain Limited Warranty service

This Limited Warranty is fully transferable provided that the current owner furnishes the original proof of purchase from an authorized Jensen Sure Seal™ dealer. The maximum liability of Jensen Sure Seal™ shall not exceed the actual purchase price paid by you for the product. In no event shall Jensen Sure Seal™ be liable for special, incidental, and consequential or indirect damage INCLUDING BUT NOT LIMITED TO ANY MODIFICATIONS OR ATTEMPTS TO REPAIR BY THE CUSTOMER.

Operating Instructions

  1. Check the sealer heating bars (jaws) to be sure they are clean and free of any residue.
  2. Rotate the knob on the temperature dial to the recommended sealing temperature specified by the manufacturer of the barrier material you will be using.
    Remove any flammable objects surrounding the sealer.
  3. Plug the electrical cord into a 110Volt outlet. LED (light) will begin to blink. Note: Heating bars will immediately begin to heat up.
  4. Wait 5 to 6 minutes for the sealer to reach the set temperature. LED will stay on when set temperature is reached.
  5. Now you are ready to begin sealing. Position the two (2) pieces of barrier material (sealable sides together) squarely together and clamp the jaws shut.
    Count the appropriate number of seconds (dwell time) as recommended by the material manufacturer. Release the jaws and inspect the seal. The seal
    will require a few seconds to cool.
  6. When sealing in a continuous line, overlap each sealing application by approximately ½”.
  7. Inspect all your seals after completion.
  8. Unplug the sealer when finished and allow it to cool for one (1) hour before storing.

Note: Do not carry the sealer by the cord. Use the handle.

Weekly Maintenance: Check the Stud Assembly for loose nuts and tighten if needed.