Dual Wall Heat Shrink Tubing
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 |
| 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 |
|
-55 to 125 |
Yes |
Automotive OEM approved |
| CFRA |
Highly flame retardant for fuse links and splice sealing |
|
-55 to 125 |
Highly |
Automotive OEM approved |
| DERAY® MDKT |
Semi-rigid, translucent tubing for crimp connections |
3:1 |
-40 to 100 |
No |
|
|
