Heat Shrinkable Gland (GHSG)
GHSG glands give a watertight, fume-tight seal where cable enters connection boxes, bulkheads or enclosures: a three-part cross-linked polyolefin and nylon-nut assembly, pressure-sealed to 25 psi, rated 600 V.
- ASTM D638
- ASTM D792
- ASTM D2240
More datasheets
Full dimensional specifications and technical data — download the sheet for your size.
Choose a size
Selection Chart
- A
- Overall length of the heat shrinkable moulded part
- B
- Dimension across the opening in the cabinet wall, as drawn on GSF's sheet
- Supplied / recovered ID
- Internal diameter as supplied (min.) and after free recovery (max.)
| Gala Code | A | B | Supplied ID(min.) | Recovered ID(max.) | Cable diameter range |
|---|---|---|---|---|---|
| GHSG-1 | 70 | 25 | 13 | 4.3 | 5 - 10 |
| GHSG-2 | 70 | 25 | 19 | 5.5 | 6 - 17 |
| GHSG-3 | 95 | 35 | 29 | 12.5 | 14 - 25 |
| GHSG-4 | 116 | 51 | 39 | 19.0 | 20 - 37 |
| GHSG-5 | 178 | 89 | 70 | 35.5 | 37 - 67 |
Single-outlet glands. Multi-outlet and right-angle versions: ask Gala for sizes. Source: GALA Heat Shrinkable Gland catalogue sheet, Issue 2, January 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 | 1.0± 0.2 gm/cm³ | ASTM D792 |
| Longitudinal Change | -10% (max.) | ASTM D2671 |
| Hardness | 45 ±10 Shore D | ASTM D2240 |
| Water absorption | 0.5 % (max.) | ASTM D570 |
| Thermal | ||
| Accelerated ageing | (150 °C for 168 hrs.) | ASTM D2671 |
| Tensile Strength | 12 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 to +110 °C | IEC 216 |
| Electrical | ||
| Di-electric Strength (2mm Wall) | 12 kV/mm.(min) | ASTM D149 |
| Volume Resistivity | 1 x 10¹² Ohm.cm (min) | ASTM D257 |
| Dielectric constant | 5 (max.) | ASTM D150 |
Source: GALA Heat Shrinkable Gland catalogue sheet, Issue 2, January 2024.
Dimensions & Drawings
Gala Heat Shrinkable Glands (GHSG) give a watertight and fume-tight seal where cable enters connection boxes, bulkheads or other enclosures.
The standard entry seal for thin-wall enclosures is a three-part assembly: an O-ring, a heat-shrinkable moulded part and a rigid nylon nut, combining the nylon nut with cross-linked polyolefin.
Every gland is supplied with factory-applied hot-melt adhesive, which seals to the wire and cable jacket.
Covered on this page
- Heat Shrinkable Gland
Features & Benefits
- Pressure-sealed to 25 psi, rated 600 V
- Three-part assembly: O-ring, heat-shrinkable moulded part, rigid nylon nut
- Tensile strength 12 N/mm² min, elongation 350% min (ASTM D638)
- Density 1.20±0.2 g/cm³ (ASTM D792); hardness 45±10 Shore D (ASTM D2240)
- Water absorption 0.5% max (ASTM D570)
- Factory-applied hot-melt adhesive seals to the wire and cable jacket
- GHSG-1 to GHSG-5 cover cable diameters 5 mm to 67 mm, supplied ID 13 mm to 70 mm
Applications
- Cable entry into connection boxes
- Bulkhead and enclosure cable entry sealing
Standards & Compliance
- ASTM D638
- ASTM D792
- ASTM D2240
- ASTM D570
FAQs
Frequently Asked Questions
What is the Heat Shrinkable Gland used for?
It is used for:
- Cable entry into connection boxes
- Bulkhead and enclosure cable entry sealing
How do I choose the right size?
Measure the outside diameter of the cable and choose the code whose "Cable diameter range" covers it. For example, GHSG-3 fits a cable of 14–25 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
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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