Chemical composition Typical Curing Properties Maximum gap fill *Handling times can be affected by temperature, humidity and specific surfaces being bonded. Larger gaps or acidic surfaces will also reduce cure speed but this can be overcome by the use of Permabond C Surface Activator (CSA) or Permabond QFS 16. Technical Datasheet i Good gap fill (up to 0.5mm / 0.02") Toughened and flexible Ease of use - no mixing or heat cure Black - so suitable for dark surfaces 100% reactive, no solvents Typical Performance of Cured Adhesive Description PERMABOND® 737 is a toughened cyanoacrylate with improved impact and peel strength for maximum flexibility. Its increased temperature resistance and dark colour make 737 suitable for a wide range of applications. It bonds rapidly to a variety of surfaces including aluminium, steel (both zinc-plated and uncoated), plastics and rubbers. Physical Properties of Uncured Adhesive Shear strength* (ISO4587) *Strength results will vary depending on the level of surface preparation and gap. Hot Strength "Hot strength" shear strength tests performed on mild steel. 24hr cure at room temperature and conditioned to pull temperature for 30 minutes before testing. 737 can withstand higher temperatures for brief periods (such as for paint baking and wave soldering processes) providing the joint is not unduly stressed. The minimum temperature the cured adhesive can be exposed to is -55°C (-65°F) depending on the materials being bonded. The information given and the recommendations made herein are based on our research and are believed to be accurate but no guarantee of their accuracy is made. In every case we urge and recommend that purchasers before using any product in full-scale production make their own tests to determine to their own satisfaction whether the product is of acceptable quality and is suitable for their particular purpose under their own operating conditions. THE PRODUCTS DISCLOSED HEREIN ARE SOLD WITHOUT ANY WARRANTY AS TO MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY OTHER WARRANTY, EXPRESS OR IMPLIED. No representative of ours has any authority to waive or change the foregoing provisions but, subject to such provisions, our engineers are available to assist purchasers in adapting our products to their needs and to the circumstances prevailing in their business. Nothing contained herein shall be construed to imply the non-existence of any relevant patents or to constitute a permission, inducement or recommendation to practice any invention covered by any patent, without authority from the owner of this patent. We also expect purchasers to use our products in accordance with the guiding principles of the Chemical Manufacturers Association’s Responsible Care® program. Permabond 737 Global TDS Revision 7 06August 2020 Page 1/2 FOR PROFESSIONAL OR INDUSTRIAL USE ONL Y. KEEP OUT OF REACH OF CHILDREN

Specimens were immersed for 1000 hours at 22°C (unless otherwise stated). Surface Preparation Surfaces should be clean, dry and grease-free before applying the adhesive. Use a suitable solvent (such as acetone or isopropanol) for the degreasing of surfaces. Some metals such as aluminium, copper and its alloys will benefit from light abrasion with emery cloth (or similar), to remove the oxide layer. 1) Shake bottle before use. 2) Apply the adhesive sparingly to one surface. 3) Bring the components together quickly and correctly aligned. 4) Apply sufficient pressure to ensure the adhesive spreads...