Pole Cap
Pole Cap is a heat shrink cap that covers the top of a wooden power pole to protect it from water and moisture ingress, extending pole life.
- ASTM D638
- ASTM D570
- ASTM D2671
Choose a size
Selection Charts
- Ds (min.)
- Minimum internal diameter as supplied
- Df (max.)
- Maximum internal diameter after free recovery
- Ls (min.)
- Minimum length as supplied
- Tf
- Wall thickness after recovery (±10%)
- Pole Range
- Pole (or pile) diameters the cap fits
- D, h, H, T (PVC caps)
- Cap width, skirt height, overall height and wall thickness (±10%)
| Code No. | Ds(Min.) | Df(Max.) | Ls(Min.) | Tf(±10%) | Pole Range |
|---|---|---|---|---|---|
| GPC 801S | 190 | 125 | 220 | 4.0 | 140 - 165 |
| GPC 801 | 230 | 125 | 220 | 4.0 | 140 - 200 |
| GPC 901 | 310 | 120 | 220 | 7.0 | 140 - 280 |
| GPC 1001 | 400 | 204 | 220 | 6.0 | 230 - 360 |
| GPC 1101 | 500 | 200 | 220 | 6.0 | 230 - 460 |
All dimensions are in mm. D: internal diameter; s: as supplied; f: after free recovery. Source: GALA POLECAP catalogue sheet, Issue 2, January 2024.
PVC round caps (GRPC)
| Code No. | D(Min.) | h(Min.) | H(Min.) | T(±10%) |
|---|---|---|---|---|
| GRPC 213 | 213 | 102 | 207 | 2.5 |
| GRPC 241 | 241 | 102 | 221 | 2.5 |
| GRPC 260 | 260 | 102 | 230 | 2.5 |
| GRPC 267 | 267 | 102 | 234 | 2.5 |
| GRPC 298 | 298 | 102 | 249 | 2.5 |
| GRPC 305 | 305 | 102 | 253 | 2.5 |
| GRPC 324 | 324 | 102 | 262 | 2.5 |
| GRPC 356 | 356 | 102 | 278 | 3.5 |
| GRPC 375 | 375 | 102 | 288 | 3.5 |
| GRPC 403 | 403 | 102 | 302 | 3.5 |
| GRPC 467 | 467 | 102 | 334 | 3.5 |
| GRPC 489 | 489 | 102 | 345 | 3.5 |
Source: GALA Polecap / Dock Pile Cap (PVC) catalogue sheet, Issue 2, January 2024.
PVC square caps (GSPC)
| Code No. | D(Min.) | h(Min.) | H(Min.) | T(±10%) |
|---|---|---|---|---|
| GSPC 235 | 235 | 51 | 190 | 2.5 |
| GSPC 343 | 343 | 127 | 331 | 2.5 |
| GSPC 381 | 381 | 127 | 331 | 2.5 |
| GSPC 406 | 406 | 127 | 369 | 3.5 |
| GSPC 432 | 432 | 127 | 385 | 3.5 |
| GSPC 457 | 457 | 127 | 400 | 3.5 |
| GSPC 483 | 483 | 127 | 415 | 3.5 |
Source: GALA Polecap / Dock Pile Cap (PVC) catalogue sheet, Issue 2, January 2024.
Dimensions & Drawings
Pole Cap covers the top of a wooden power pole to keep out water and moisture, extending pole life.
Supplied in an expanded form. Heated above 125°C with a propane or butane torch (soft blue flame, yellow tip; avoid a pencil-thin flame or scorching), it shrinks down over the pole top, closed end first, with adhesive visible at the finished edge. Let it cool before applying mechanical strain.
Covered on this page
- Heat Shrinkable Pole Cap
- Vinyl Pole Cap
- The Best & Cost-effective Solution for long term maintenance of Poles :
Features & Benefits
- Hot melt adhesive lining gives 100% environmental sealing to IP68
- Resistance to UV rays and ozone
- Adhesive penetrates pole cracks and cavities on shrinking to reinforce the top
- Easy installation on concrete, wood, steel or composite poles in minutes
- Prevents bird perching and nesting damage on pole tops
- Eliminates outages from flash-over and electrocution
Applications
- Wooden power pole top protection
- Utility pole maintenance and life extension
Standards & Compliance
- ASTM D638
- ASTM D570
- ASTM D2671
- ESI 09-11
- ASTM D149
- ASTM D257
- ASTM D150
FAQs
Frequently Asked Questions
What is the Pole Cap used for?
It is used for:
- Wooden power pole top protection
- Utility pole maintenance and life extension
How do I choose the right size?
Measure the outside diameter of the pole and choose the code whose "Pole Range" covers it. For example, GPC 901 fits a pole of 140–280 mm. Where two ranges overlap, either code fits.
How is it installed?
Clean and degrease the surface, position the part, then shrink it with a gas torch or a hot-air gun: keep the heat moving round it with a smooth, brushing motion so it recovers evenly without scorching. Start at one end and work steadily along to the other.
Which standards and test methods are quoted for it?
These:
- ASTM D638
- ASTM D570
- ASTM D2671
- ESI 09-11
- ASTM D149
- ASTM D257
- ASTM D150
Where can I download the datasheet?
From the "Download datasheet" button at the top of this page, or here:
Can I get a quote, a sample or a size that is not listed?
Send your cable details, quantity and application with the "Request a Quote or Sample" form at the foot of this page. For a size or variant that is not in the chart, describe what you need there, or use Technical support at the top of the page, and the technical team will confirm what can be supplied.

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