The Hilti CP 637 Firestop Mortar is a quick setting fire resistant mortar ideal for firestopping large applications.
Features & Applications
- Fire-resistant, mortar suitable for firestopping large openings
- Quick setting — forms can be removed in as little as 2 hours
- Superior working properties
- Can be used in horizontal or vertical applications
- No shrinkage during curing process
Technical Data
CP 637
| Color | Light Red | |
| Application temperature (ideal) | 40° F to 110° F (5° C to 43° C) | |
| Form removal (depending on consistency) | Approx. 2 hours | |
| Density (dry) | Approx. 40.6 pcf | |
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| Expansion on setting (approx.) |
0.08% | |
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| Temperature resistance of cured mortar | -22° F to 176° F (–30° C to 80° C) | |
Compressive strength |
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| 24 hrs after casting | After full cure | |
| Pourable | 508 psi (3.5 N/mm2) | 1784 psi (12.3 N/mm2) |
| Plastic | 696 psi (4.8 N/mm2) | 1200 psi (8.3 N/mm2) |
| Stiff | 870 psi (6.0 N/mm2) | 1784 psi (12.3 N/mm2) |
| Surface burning characteristics (ASTM E 84-01) | Flame Spread: 5 Smoke Development: 0 |
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| Yield (30 lb pail) | 900-1000 cubic inches (depending on mix ratio) | |
| Approvals • California State Fire Marshal - No. 4485-1200:120 • City of New York - MEA 239-02-M |
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| Tested in accordance with • ASTM E 814 • UL 1479 • CAN/ULC-S115 • ASTM E 84 |
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| * At 73° F (23° C) and 50% relative humidity | ||
| Description | Qty | Item No. |
| CP 637 Firestop Mortar, 30 lb pail | 1 | 00340645 |
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