Silicone Interlocking Overhead Line Cover
Gala Silicone Interlocking Overhead Line Covers are made from non-tracking silicone rubber, designed for field installation over bare conductors, insulating up to 33 kV.
- Electrical insulation up to 33 kV
Choose a size
Selection Charts
| Gala Code | Conductor Dia.(mm) | Thickness(mm) | Packaging(Mtr./Roll) |
|---|---|---|---|
| GSIOC-M 12 | upto 12 | 2 | 15 |
| GSIOC-M 15 | upto 15 | 2 | 15 |
| GSIOC-M 18 | upto 18 | 2 | 15 |
| GSIOC-M 20 | upto 20 | 2 | 15 |
| GSIOC-M 24 | upto 24 | 2 | 15 |
Source: GALA Silicone Interlocking Overhead Line Cover catalogue sheet, Issue 2, November 2025.
GSIOC-H — interlocking, 2.7 mm wall
| Gala Code | Conductor Dia.(mm) | Thickness(mm) | Packaging(Mtr./Roll) |
|---|---|---|---|
| GSIOC-H 12 | upto 12 | 2.7 | 15 |
| GSIOC-H 15 | upto 15 | 2.7 | 15 |
| GSIOC-H 18 | upto 18 | 2.7 | 15 |
| GSIOC-H 20 | upto 20 | 2.7 | 15 |
| GSIOC-H 24 | upto 24 | 2.7 | 15 |
Source: GALA Silicone Interlocking Overhead Line Cover catalogue sheet, Issue 2, November 2025.
GSDIOC — double interlocking, 3.8 mm wall
| Gala Code | Conductor Dia.(mm) | Thickness(mm) | Packaging(Mtr./Roll) |
|---|---|---|---|
| GSDIOC-10 | upto 10 | 3.8 | 15 |
Source: GALA Silicone Interlocking Overhead Line Cover catalogue sheet, Issue 2, November 2025.
Material properties
Technical Specification
| Properties | Test method | Typical value |
|---|---|---|
| Physical | ||
| Tensile Strength | ASTM D638 | 4 N/mm² (min.) |
| Elongation | ASTM D638 | 200% (min.) |
| Density | ASTM D792 | 1.10 - 1.45 gm/cm³ |
| Hardness | ASTM D2240 | 65 ± 5 Shore A |
| Low Temp. Flexibility | ASTM D2671 | No Cracking of material at -20 °C for 4 Hrs. |
| Water Absorption (After 24 Hrs. at 23 Deg. C) | ASTM D570 | 0.5% (max.) |
| Thermal | ||
| Thermal Ageing | ASTM D2671 | 150 °C for 168 hrs. |
| Tensile Strength | ASTM D638 | 3.0 N/mm² (min.) |
| Elongation | ASTM D638 | 100% (min.) |
| Electrical | ||
| Volume Resistance | ASTM D257 | 1 x 10¹⁰ Ohm. cm (min.) |
| Tracking and Erosion Resistance | ASTM D2303 | No tracking or erosion to top surface or flame failure after 1 hr. at 2.5 kV · 1 hr. at 2.75 kV · 1 hr. at 2.5 kV · 1 hr. at 3.0 kV · 20 min. at 3.25 kV |
Source: GALA Silicone Interlocking Overhead Line Cover catalogue sheet, Issue 2, November 2025.
GSIOC field-installs over bare conductors, giving phase-to-phase and phase-to-ground insulation with UV and tracking resistance, up to 33 kV.
Features & Benefits
- Non-tracking silicone rubber construction
- Electrical insulation up to 33 kV
- UV resistance and tracking resistance
Applications
- Field-installed overhead conductor insulation
- Phase-to-phase and phase-to-ground bird/animal protection
FAQs
Frequently Asked Questions
What is the Silicone Interlocking Overhead Line Cover used for?
It is used for:
- Field-installed overhead conductor insulation
- Phase-to-phase and phase-to-ground bird/animal protection
How do I choose the right size?
Use the selection chart on this page: it lists every code with its dimensions. If you are not sure which fits, send the dimensions you are working to with the form below.
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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