Dock Pile Cap for Wooden Pile Protection
Dock Pile Cap is a heat-shrinkable cap that covers the top of a wooden dock pile to keep out water and moisture, increasing dock pile life, with a service life of more than 30 years from one torch-applied installation.
- ASTM D638
- ASTM D570
- ASTM D2671
Choose a size
Selection Chart
- 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
| 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 Dock Pile Cap catalogue sheet, Issue 2, January 2024.
Dimensions & Drawings
Dock Pile Cap covers the top of a wooden dock pile to keep out water and moisture, extending pile 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 pile top, closed end first, with adhesive visible at the finished edge. Let it cool before applying mechanical strain.
Covered on this page
- Dock Pile Cap
- The Best & Cost-effective Solution for long term maintenance of Dock Pile :
Features & Benefits
- Hot melt adhesive lining gives 100% environmental sealing to IP68
- Resistant to UV rays and ozone
- Five sizes cover pile diameters from 140mm to 460mm
- Service life of more than 30 years
- Easy installation on concrete, wood, steel or composite poles in minutes
- Adhesive penetrates cracks and cavities to reinforce the pile top
- Impact resistance against sharp-edge strikes
- Prevents birds from perching or nesting (woodpecker damage) on the pile top
- Protects the pile top from freeze-thaw damage
- No maintenance required after installation
Applications
- Wooden dock pile tops
- Marine pylons, to protect piling
- Concrete, wood, steel and composite pole tops
Standards & Compliance
- ASTM D638
- ASTM D570
- ASTM D2671
- ASTM D149
- ASTM D257
- ASTM D150
- ESI 09-11
- IP68
FAQs
Frequently Asked Questions
What is the Dock Pile Cap for Wooden Pile Protection used for?
It is used for:
- Wooden dock pile tops
- Marine pylons, to protect piling
- Concrete, wood, steel and composite pole tops
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
- ASTM D149
- ASTM D257
- ASTM D150
- ESI 09-11
- IP68
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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