Tamper Proof End Seal
Tamper Proof End Seal is a heat shrink end cap, cross-linked polyolefin, that forms a permanent, non-removable seal against water and moisture ingress at the cable end.
- Meets IP68 Ingress Protection
- ASTM D638
- ASTM D792
- ASTM D2240
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%)
- Cable range
- Cable outside diameter the cap fits
| Code No. | Ds(min.) | Df(max.) | Ls(min.) | Tf(±10%) | Cable range |
|---|---|---|---|---|---|
| GEC 001S | 6 | 2 | 25 | 2.0 | 2-4 |
| GEC 001SA | 8 | 2 | 25 | 2.0 | 4-6 |
| GEC 001 | 12 | 4 | 40 | 2.3 | 4-8 |
| GEC 001L | 12 | 4 | 58 | 2.3 | 4-8 |
| GEC 001 A | 14 | 4 | 58 | 2.3 | 4 - 11 |
| GEC 001 AL | 14 | 4 | 58 | 2.3 | 4 - 11 |
| GEC 101 | 20 | 7.5 | 55 | 2.3 | 8 - 16 |
| GEC 101 L | 20 | 8 | 75 | 2.5 | 8 - 16 |
| GEC 101 A | 25 | 8 | 55 | 2.3 | 8 - 20 |
| GEC 101 AL | 25 | 8 | 75 | 2.5 | 8 - 20 |
| GEC 102 | 30 | 11 | 75 | 2.5 | 12 - 26 |
| GEC 102 A | 35 | 11 | 75 | 2.5 | 12 - 30 |
| GEC 102 AL | 35 | 11 | 105 | 2.5 | 12 - 30 |
| GEC 201 | 40 | 15 | 90 | 3.3 | 16 - 35 |
| GEC 201 L | 40 | 15 | 120 | 3.3 | 16 - 35 |
| GEC 201 A | 45 | 15 | 90 | 3.3 | 16 - 40 |
| GEC 201 AL | 45 | 15 | 120 | 3.3 | 16 - 40 |
| GEC 301 | 55 | 25 | 125 | 3.8 | 25 - 47 |
| GEC 301 L | 55 | 25 | 170 | 3.8 | 25 - 47 |
| GEC 301 A | 63 | 25 | 125 | 3.8 | 25 - 55 |
| GEC 301 AL | 63 | 25 | 170 | 3.8 | 25 - 55 |
| GEC 401 | 75 | 35 | 140 | 4.0 | 35 - 68 |
| GEC 401 L | 75 | 35 | 180 | 4.0 | 35 - 68 |
| GEC 401 A | 85 | 36 | 140 | 4.0 | 36 - 78 |
| GEC 401 AL | 85 | 35 | 180 | 4.0 | 36 - 78 |
| GEC 501 | 100 | 45 | 160 | 4.0 | 45 - 90 |
| GEC 501 L | 100 | 45 | 200 | 4.0 | 45 - 90 |
| GEC 501 A | 120 | 45 | 160 | 4.0 | 45 - 110 |
| GEC 501 AL | 120 | 45 | 200 | 4.0 | 45 - 110 |
| GEC 601 | 130 | 60 | 155 | 4.6 | 64 - 120 |
| GEC 601 L* | 130 | 65 | 300 | 4.6 | 67 - 120 |
| GEC 701 | 154 | 60 | 165 | 4.6 | 70 - 145 |
| GEC 701 L* | 160 | 65 | 300 | 4.5 | 70 - 145 |
| GEC 801 S* | 190 | 125 | 220 | 4.0 | 140 - 165 |
| GEC 801* | 230 | 125 | 220 | 4.0 | 140 - 200 |
| GEC 901* | 310 | 120 | 220 | 7.0 | 140 - 280 |
| GEC 1001* | 400 | 204 | 220 | 6.0 | 230 - 360 |
| GEC 1101* | 500 | 200 | 220 | 6.0 | 230 - 460 |
* New sizes. D: internal diameter; s: as supplied; f: after free recovery. Source: GALA Tamper Proof End Seal catalogue sheet, Issue 2, December 2024.
Material properties
Technical Specification
| Properties | Value | Standard |
|---|---|---|
| Physical | ||
| Tensile Strength | 12 N/mm² (Mpa) (min.) | ASTM D638 |
| Ultimate Elongation | 350% (min.) | ASTM D638 |
| Density | 1.05 ± 0.2 gm/cm³ | ASTM D792 |
| Hardness | 45 ± 10 Shore D | ASTM D2240 |
| Water Absorption | 0.2% (max.) | ASTM D570 |
| Thermal | ||
| Accelerated Ageing | (120 °C for 500 hrs.) | ASTM D2671 |
| Tensile Strength | 11 N/mm² (Mpa) (min.) | ASTM D638 |
| Ultimate Elongation | 300% (min.) | ASTM D638 |
| Low Temperature Flexibility (-40 °C for 4 hrs.) | No Cracking | ASTM D2671 |
| Heat Shock (250 °C for 30 min.) | No cracking or flowing | ESI 09-11 |
| Shrink Temperature | 125 °C | IEC 216 |
| Continuous Temperature Limit | -40 °C to 100 °C | IEC 216 |
| Electrical | ||
| Dielectric Strength | 12kV/mm. (min.) | ASTM D149 |
| Volume Resistivity | 1 x 10¹⁴ Ohm.cm (min.) | ASTM D257 |
| Dielectric Constant | 5 (max.) | ASTM D150 |
Source: GALA Tamper Proof End Seal catalogue sheet, Issue 2, December 2024.
Dimensions & Drawings
Compatible with the most commonly used 36 kV cable joints: XLPE, PVC, PILC or rubber sheathed cable.
The hot melt adhesive lining forms a permanent seal on irregular cable sheaths, to IP68 (Ingress Protection).
Covered on this page
- Tamper Proof Features / Benefits :
- All dimensions are in mm
Features & Benefits
- Compatible with 36 kV XLPE, PVC, PILC or rubber sheathed cable joints
- Meets IP68 Ingress Protection
- Permanent seal that cannot be removed or re-used once shrunk
- Custom logo printing in non-removable ink for cable-length warranty control
- Valved (V) variant for pressurised telecom cable applications
- Relief-valved (RV) variant for degassing high voltage power cable
- GEC 001S to GEC 1101 size range, cable diameter 2-4 mm to 230-460 mm
Applications
- Factory-fitted cable end sealing for warranty control on cable length
- Pressurised telecom cable sealing (valved variant)
- High voltage power cable degassing (relief-valved variant)
Standards & Compliance
- ASTM D638
- ASTM D792
- ASTM D2240
- ASTM D570
- ASTM D2671
- ESI 09-11
- IEC 216
- ASTM D149
- ASTM D257
- ASTM D150
FAQs
Frequently Asked Questions
What is the Tamper Proof End Seal used for?
It is used for:
- Factory-fitted cable end sealing for warranty control on cable length
- Pressurised telecom cable sealing (valved variant)
- High voltage power cable degassing (relief-valved variant)
How do I choose the right size?
Measure the outside diameter of the cable and choose the code whose "Cable range" covers it. For example, GEC 301 A fits a cable of 25–55 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, with the values in the Technical Specification on this page:
- ASTM D638
- ASTM D792
- ASTM D2240
- ASTM D570
- ASTM D2671
- ESI 09-11
- IEC 216
- 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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