UL94 VO Rated Heat Resistant Adhesives

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Medium Open Time UL94VO Approved Bulk Hot Melt for Product Assembly

Best for High Volume Applications: Medium Open Time UL 94 Rated Bulk Hot Melt for Product Assembly

Use bulk hot melt for mid to high volume applications. This Infinity Bond high performance bulk hot melt is excellent for product assembly applications and carries a UL 94 V2 flame rating. It is also FDA approved for non-direct food contact.

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3M Scotch Weld 3748 VO Hot Melt

Best for Low Volume Applications: 3M Scotch Weld 3748 VO Hot melt - Q, TC and PG

Use hot melt glue sticks for low volume applications. The 3M 3748 VO is a unique hot melt adhesive often used in electronic assembly because it provides excellent thermal shock resistance and is non-corrosive to copper. The 3M 3748 VO also provides an excellent bond to polyolefins and meets UL1410 requirements.

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Common Questions About UL94 VO Rated Heat Resistant Adhesives

Yes! There is a distinct difference. Let's set the story straight. 

Fire resistant adhesives - these are often products such as inorganic adhesive cements and sealants. They don't burn and they withstand extreme temperatures. These types of products are often used for applications in blast furnaces, ovens, etc. They don't do anything to stop an assembly burning - but they do a great job of holding all the burning bits together. 

Fire retardant adhesives - these help to extinguish the flames and slow the spread of fire. 

UL is the abbreviation for the Underwriters Laboratories, this is an independent organization in the United States to control and certificate product safety. UL provides safety related certification, validation, inspection and testing services to a range of clients including manufacturers, retailers, policy makers and regulators. 

  • HB: Slow burning on a horizontal speciment; burning rate < 76 mm/min for thickness < 3 mm or burning stops before 100 mm.
  • V-2: Burning stops within 30 seconds on a vertical specimen; drips of particles allowed as long as they are no inflamed. 
  • V-1: Burning stops within 30 seconds on a vertical specimen; drips of particles allowed as long as they are not inflamed.
  • V-0: Burning stops within 10 seconds on a vertical specimen; drips of particles allowed as long as they are not inflamed. 
  • 5VB: Burning stops within 60 seconds on a vertical specimen; no drips allowed; plaque specimens may develop a hole. 
  • 5VA: Burning stops within 60 seconds on a vertical specimen; no drips allowed; plaque specimens may not develop a hole.

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