Wrimco
Polyethylene foam Backing Rod
is highly resistant to weathering, ultra-violet rays, most common chemicals and oxidation. It is non-toxic and odourless. It meets the requirements of Australian Standard AS2170, "Plastic Materials for Food Contact Use".
The closed cells give backer rod its excellent dimensional
stability enabling it to withstand many years of compression and expansion and
also gives the product its superior water proofing properties.
To obtain a good seal, the backer rod should be
compressed 30% when in position. Therefore specify a diameter of rod 30% larger
than the width of the opening to be sealed.
physical properties:
Weather Resistance: Wrimco backer rod was subjected to 400
hours of UV irradiation in a Weatherometer, which is equivalent to two years
exposure to sunlight. See table below for results.
No moisture absorption. No adhesion to sealants
Chemical resistance: White
backer rod is unaffected by domestic effluent or by most common industrial
chemicals, e.g. hydrochloric acid, ammonium hydroxide, urea, kerosene,
methylated spirits for example.
Heat ageing: Shrinkage after 24 hours at 70 oC, less
than 1%. Shrinkage after 24 hours at 90 oC, approx. 1%
Typical Applications:
-
Building: Vertical and horizontal joint filler in
concrete and between precast concrete panels, interior walls, sealing
skylights, shop fronts and curtain wall construction.
-
Industrial: Swimming pools, draught proofing, dust
sealing, electrical sealing control boxes, truck and trailer construction.
-
Furniture: Piping around chairs.
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Size: Diameter Length
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Roll Length
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Joint Width
|
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6 mm
|
250 m Roll
|
4-5mm
|
|
10mm
|
250m Roll
|
6-8mm
|
|
13mm
|
50m Roll
|
9-11mm
|
|
15mm
|
50m Roll
|
12-13mm
|
|
20mm
|
50m Roll
|
14-17mm
|
|
25mm
|
50m Roll
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18-20mm
|
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30mm
|
50m Roll
|
21-27mm
|
|
40mm
|
2m each
|
28-35mm
|
|
50mm
|
2m each
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>35mm
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