PR-520 · Curtain Wall
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All-Round Neutral Curtain Wall Sealant
High-modulus all-round sealant for curtain wall and facade joints. The highest extrusion rate in our range — 543 mL/min for maximum on-site productivity.
| Product Standard | GB/T 14683-2017 |
|---|---|
| Cure System | Neutral Cure |
| Packaging | 590mL sausage (SR-I-F-25HM) |
| Shelf Life | 12 months from production date |
| Transport | Non-hazardous goods |
| Storage | Dry, ventilated, cool place |
Technical Data
| Extrusion rate | 543 mL/min (min. 150) |
|---|---|
| Tack-free time | 0.8 h (max. 3) |
| Sag resistance (vertical) | 0 mm (max. 3) |
| Tensile modulus at 23°C | 0.8 MPa (>0.4 / >0.6) |
| Adhesion at maintained extension | No failure |
| Classification | SR-I-F-25HM |
Typical values obtained under laboratory conditions (23°C / 50% RH) and not intended for specification purposes. Tested to GB/T 14683-2017 — Report No. 2024ME302. Download the full test report on request.
Product Characteristics
- Highest extrusion rate in the PIROI range — 543 mL/min (3.6x the standard requirement)
- Classified SR-I-F-25HM — 25% movement capability, high modulus
- All-round performance for curtain wall and facade sealing
- Fast tack-free time of 0.8 hours
- Adhesion at maintained extension with no failure
- Excellent weathering for tropical and high-UV climates
Applications
- Curtain wall and unitised facade joints
- Aluminium composite panel and metal cladding
- Exterior expansion and movement joints
- High-rise building perimeter sealing
Limitations
- Not for structural bonding
- Do not apply on oily or exuding surfaces
- Not for continuous water immersion
- Apply at 4°C to 50°C