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Heat Shrinkable Anode Caps


Anode Caps for Sealing Anode to Lead Wire Connections

Farwest Anode Caps seal and protect the critical connection between the lead wire and anode. The tight fitting, heat-shrinkable anode cap provides stress relief, moisture proofs and electrically insulates the end of the anode at the lead wire exit point. It is the ideal solution to the problem of premature system failure due to loss of the wire due to anode termination.

A unique, highly stabilized polyolefin material is used to mold the cap. During the manufacturing process, each cap is expanded to provide plenty of clearance for easy installation over the lead wire and the anode. A rubber based sealant, designed to adhere to anode materials and wire insulation, is uniformly coated on the inside of the cap.

During installation, a propane torch is used to heat the cap. As the temperature rises above 250oF, the sealant softens and the cap shrinks tightly to conform to the anode and lead wire. When cooled, the cap and sealant provide a durable and water tight encapsulation that will retain its flexibility and integrity over a wide range of temperatures.

Anode Caps are designed for anodes from 1" to 4" diameter. For high reliability in buried underwater cathodic protection systems, specify Farwest Anode Caps.

Typical Properties
  
  A. Backing Property Test Method Typical Data
  Tensile Strength ASTM D-638 2000 psi
  Ultimate Elongation ASTM D-638 330%
  Water Absorption ASTM D-570 0.06%
  Volume Resistivity ASTM-D-257 1014 ohm-cm
  B. Adhesive Property    
  Viscosity @ 160oC ASTM D-4402 340 poise
  Ring & Ball Softening Point ASTM D-36 90oC
  Lap Shear ASTM D-1002 35 psi

Dimensions & Ordering Data

Raychem
Part No.
Anode
Dia.
Std.
Package
"J"
Dimensions
"H"
Dimensions
Lengths Wall
Thickness
Max ID Min ID Max ID Min ID S R P
Cap 1.5 1.5" 15 .200" .480" 1.50" 1.75" 2.5" 3.0" 5.5" .080"
Cap 2 2" 30 .270" .480" 2.00" 2.25" 3.0" 3.0" 6.0" .090"
Cap 3 3" 20 .270" .480" 3.00" 3.25" 3.0" 4.0" 7.0" .090"
Cap 4 4" 10 .270" .480" 4.00" 4.25" 3.0" 4.0" 7.0" .090"

Max ID is maximum installed diameter after shrinking.
Min ID is minimum diameter before shrinking.
  

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