Dual Wall

Dual wall heat shrink tubing is a cross-linked polyolefin tube that is extruded with an inner layer of adhesive. Upon recovery of dual wall heat shrink, the inner layer of adhesive will melt and flow.

In the dual wall or adhesive lined heat shrink category, CPA 300 stands out as a product that is well suited for many different applications. The product meets UL 224 and SAE-AMS-DTL-23053/4 standards with the flammability rating applying to the total tube (many products are rated as jacket only). It is also ideal for connector and terminal applications since the CPA adhesive is the strongest in the field for bonding to copper, steel, and polyethylene.

The chart below highlights some of the other options available for dual wall products including: shrink ratio, rigidity, and operating temperature.

Product Description and
Application
Shrink
Ratio
Operating
Temperature
°C
Flame
Retardent
Standards
CPA 100 General purpose for terminal sealing 3:1 -55 to 110 Yes OEM approvals
CPA 300 High performance for automotive and military 3:1 -55 to 125 Highly SAE-AMS-DTL-23054/4
UL 224, CSA Class 3
CWWT 450 High clarity water well tubing 4:1 -55 to 100 No  
DERAY® HXKT Semi-rigid for terminal strain relief and sealing > 2:1 -55 to 125 No OEM approvals
DERAY® IHKT High shrink ratio for connector 4:1 -55 to 125 Yes Automotive OEM approved
DERAY® SpliceMelt Specialized splice sealing product for automotive 4:1 -55 to 125 Yes Automotive OEM approved
DERAY® SpliceMelt Caps Adhesive lined end caps for end or stub splices 4:1 -55 to 125 Yes Automotive OEM approved
CDR Insulate, seal and protect in-line splices in harnesses and electronic assemblies 4:1 -40 to 130 Yes All major automotive OEM splice sealing specifications
CDR Caps Insulate, seal and protect splice terminations and electronic assemblies 4:1 -40 to 130 Yes All major automotive OEM splice sealing specifications
DERAY® MDKT Semi-rigid, translucent tubing for crimp connections 3:1 -40 to 100 No  

 

Related Literature

Catalogue
Dual Wall
   
Application Bulletins
CPA 100
CPA 100 - Brake Line Protection
CPA 300 - Thermally Stable
Deray® HXKT

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