Pre-Insulated Pipe Sealing Cap — Single & Double Outlet
GPPC1 heat shrink caps, 60–178 mm supplied diameter, seal pre-insulated pipe joints with a hot-melt adhesive lining sealed to IP68, factory-installed in single- or double-outlet configurations.
- ASTM D638
- ASTM D570
- ASTM D2671
Installation instructions
Full dimensional specifications and technical data, ready to download.
Choose a size
Selection Charts
- D, d
- Internal diameter — D of the body, d of the finger (outlet)
- s / f
- s: as supplied; f: after free recovery
- L, l
- Length — L of the body, l of the finger
- Tb, Tc
- Wall thickness after free recovery — body, finger (±10%)
- Mlb, Mlc
- Mastic length of body, mastic length of finger
| Code | Ds(min.) | Df(max.) | ds(min.) | df(max.) | Ls(min.) | Lf(min.) | ls(min.) | lf(min.) | Tb(±10%) | Tc(±10%) | Mlb(min.) | Mlc(min.) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GPPC1-1030 | 60 | 30 | 45 | 10 | 70 | 70 | 40 | 50 | 3.2 | 4.5 | 30 | 15 |
| GPPC1-2460-1 | 85 | 60 | 42 | 24 | 70 | 87 | 90 | 108 | 3.4 | 3.3 | 30 | 15 |
| GPPC1-2640-2 | 105 | 61 | 45 | 24 | 70 | 87 | 85 | 108 | 3.4 | 3.3 | 30 | 15 |
| GPPC1-2460-3 | 125 | 61 | 65 | 24 | 75 | 87 | 75 | 108 | 3.4 | 3.3 | 30 | 15 |
| GPPC1-2460-4 | 140 | 60 | 76 | 24 | 70 | 87 | 70 | 108 | 3.4 | 3.3 | 30 | 15 |
| GPPC1-2475-1 | 118 | 75 | 52 | 24 | 65 | 75 | 30 | 40 | 2.5 | 2.3 | 30 | 15 |
| GPPC1-2475-1A | 125 | 75 | 65 | 24 | 65 | 75 | 28 | 40 | 2.5 | 2.3 | 30 | 15 |
| GPPC1-2475-2 | 145 | 75 | 65 | 24 | 55 | 75 | 28 | 40 | 2.5 | 2.3 | 30 | 15 |
| GPPC1-2475-2A | 145 | 75 | 75 | 24 | 55 | 75 | 26 | 40 | 2.5 | 2.3 | 30 | 15 |
| GPPC1-2475-3 | 158 | 75 | 70 | 24 | 55 | 75 | 26 | 40 | 2.5 | 2.3 | 30 | 15 |
| GPPC1-3090-1 | 165 | 90 | 100 | 30 | 80 | 85 | 37 | 50 | 2.3 | 2.5 | 30 | 15 |
| GPPC1-3090-2 | 185 | 90 | 67 | 30 | 65 | 85 | 32 | 50 | 2.3 | 2.5 | 30 | 15 |
| GPPC1-3090-3 | 185 | 90 | 105 | 30 | 80 | 85 | 34 | 50 | 2.3 | 2.5 | 30 | 15 |
| GPPC1-3090-4 | 207 | 90 | 105 | 30 | 70 | 85 | 34 | 50 | 2.3 | 2.5 | 30 | 15 |
| GPPC1-4090-1 | 156 | 90 | 95 | 40 | 90 | 72 | 60 | 118 | 3.7 | 4.5 | 30 | 15 |
| GPPC1-4090-2 | 178 | 90 | 105 | 40 | 95 | 72 | 55 | 118 | 3.7 | 4.5 | 30 | 15 |
| GPPC1-225300 | 570 | 300 | 420 | 225 | 55 | 80 | 45 | 90 | 3.5 | 3.6 | 30 | 15 |
Source: GALA Pre-Insulated Pipe Sealing Cap catalogue sheet, Issue 2, March 2024.
GPPC2 — double outlet (dimensions per finger)
| Code | Ds(min.) | Df(max.) | ds(min.) | df(max.) | Ls(min.) | Lf(min.) | ls(min.) | lf(min.) | Tb(±10%) | Tc(±10%) | Mlb(min.) | Mlc(min.) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GPPC2 1565S | 115 | 65 | 36 | 15 | 60 | 80 | 40 | 54 | 2.2 | 2.0 | 30 | 15 |
| GPPC2 1565 | 125 | 65 | 45 | 15 | 60 | 80 | 40 | 54 | 2.2 | 2.0 | 30 | 15 |
| GPPC2 1565A | 152 | 65 | 52 | 15 | 60 | 80 | 40 | 54 | 2.2 | 2.0 | 30 | 15 |
| GPPC2 1565AA | 156 | 65 | 45 | 15 | 60 | 80 | 40 | 54 | 2.2 | 2.0 | 30 | 15 |
| GPPC2 2075 | 175 | 75 | 60 | 20 | 80 | 105 | 45 | 80 | 3.1 | 2.9 | 30 | 15 |
| GPPC2 2075A | 200 | 75 | 60 | 20 | 80 | 105 | 45 | 80 | 3.1 | 2.9 | 30 | 15 |
| GPPC2 24135 | 235 | 135 | 68 | 24 | 80 | 160 | 50 | 70 | 2.8 | 2.5 | 30 | 15 |
| GPPC2 55175 | 265 | 175 | 86 | 55 | 80 | 130 | 50 | 65 | 3.5 | 3.5 | 30 | 15 |
| GPPC2 55175A | 300 | 175 | 100 | 55 | 80 | 130 | 50 | 65 | 3.5 | 3.5 | 30 | 15 |
| GPPC2 55175AA | 355 | 180 | 155 | 60 | 80 | 130 | 50 | 65 | 3.5 | 3.5 | 30 | 15 |
Source: GALA Pre-Insulated Pipe Sealing Cap catalogue sheet, Issue 2, March 2024.
Material properties
Technical Specification
| Properties | Value | Standard |
|---|---|---|
| Tensile Strength | 18 N/mm² (Mpa) (min.) | ASTM D638 |
| Ultimate Elongation | 450% (min.) | ASTM D638 |
| Water Absorption | 0.1% (max.) | ASTM D570 |
| Hardness | 45 Shore D (min.) | ASTM D2240 |
| Accelerated Ageing | (150 °C for 168 hrs.) | ASTM D2671 |
| Ultimate Elongation | 320% (min.) | ASTM D638 |
| Low Temp. Flexibility on 25mm Mandrel (-40 °C for 4 hrs.) | No Cracking | ASTM D3111 |
| Continuous Temperature Limit | -40 °C to 125 °C | IEC 216 |
| Adherence to the casing | 100 (max.) (@23 °C 9N/cm) | Annex B |
| Adherence to the coating (3lpp) | 100 (max.) (@23 °C 9N/cm) | Annex B |
| Shear Resistance (Adhesive) | 7N/cm² (min.) (@23 °C 10mm/min.) | DIN 30672 |
| Softening Point (Adhesive) | 130 °C (min.) | ASTM E28 |
| Adhesion / Peel Strength | 14N/cm (min.) | ISO 21809-3 |
Source: GALA Pre-Insulated Pipe Sealing Cap catalogue sheet, Issue 2, March 2024.
Dimensions & Drawings
Pre-insulated Pipe Sealing Cap is a heat shrink cap with a hot-melt adhesive/mastic lining, used to seal and protect the joints of pipelines and other substrates. The caps are manufactured from cross-linked polyolefin.
D, d: internal diameter; s: as supplied; f: after free recovery; L, l: length. Tb, Tc: thickness after free recovery; AL: adhesive length.
Covered on this page
- PRE-INSULATED PIPE SEALING CAP for Single & Double Outlet
Features & Benefits
- Hot-melt adhesive lining seals to IP68 against weathering, moisture and contamination; supplied diameter 60–178 mm (GPPC1 series)
- Watertight seal prevents water reaching the exposed insulation at the weld joint area
- Tensile strength 18 N/mm² min, elongation 350% min (ASTM D638)
- Continuous temperature limit -40°C to +100°C (IEC 216)
- Dielectric strength 12 kV/mm min, volume resistivity 1×10¹⁴ Ω·cm min (ASTM D149 / D257)
- Adhesive peel strength 100 N/25mm min (ASTM D2671); water absorption 0.1% max (ASTM D570)
- UV and ozone resistant; can be factory-installed, protecting the pre-insulated pipe through transport and storage
Applications
- Sealing pipeline joints and weld-joint areas on pre-insulated pipe
- Protecting pipe during transportation and storage
- Single-outlet and double-outlet pipe configurations
Standards & Compliance
- ASTM D638
- ASTM D570
- ASTM D2671
- ESI 09-11
- IEC 216
- ASTM D149
- ASTM D257
FAQs
Frequently Asked Questions
What is the Pre-Insulated Pipe Sealing Cap used for?
It is used for:
- Sealing pipeline joints and weld-joint areas on pre-insulated pipe
- Protecting pipe during transportation and storage
- Single-outlet and double-outlet pipe configurations
How do I choose the right size?
Use the selection chart on this page: it lists every code with its dimensions, and the key above it says what each column means. If you are not sure which fits, send the dimensions you are working to with the form below.
Which standards and test methods are quoted for it?
These, with the values in the Technical Specification on this page:
- ASTM D638
- ASTM D570
- ASTM D2671
- ESI 09-11
- IEC 216
- ASTM D149
- ASTM D257
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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