Manufacturing Cold Pour Sealant since 1982
Super Flex® | Flex Crac™
ALT-654 Super Flex® 
Premium Cold Pour Crack Sealer
A highly rubberized asphalt emulsion modified with selected plasticizers to achieve greater flexibility. Designed for sealing narrow pavement cracks up to 1" in width in asphalt and concrete surfaces.
| • Prevents moisture from entering the subgrade. • Fast drying • Excellent resilience characteristics • Low AND high temperature durability • No high temperature tracking problem |
Meets or exceeds the following specifications:
| Weight per gallon, ASTM D1010 | 8.90 - 9.40 |
| Nonvolatile %, ASTM D2939 | 66 - 70 |
| Viscosity, ASTM D562 | 80 - 100 |
| Elongation %, ASTM D412 | 1000 |
| % Recovery, ASTM D412 | 70 |
| Penetration (0.1 mm), ASTM D5 | 45 |
| Application Temp. (°F) | 50 min. |
| Preparation Before use | stir or shake |
| Softening Point (°F), ASTM D36 | 160 |
| Low Temp. Flexibility (°F) | 0 |
| Flow @ 140°F, mm, ASTM D1191 | pass |
| Std. Spec. for Emulsified Asphalt | - |
| AASHTO Designation M140-70 | meets spec. |
| ASTM Designation D977-69 | meets spec. |
| ASTM Designation D244 | meets spec. |
ALT-651 Flex Crac™
Cold Pour Crack Sealer 
A rubberized asphalt emulsion with greater flexibility designed for sealing narrow pavement cracks up to 1" in width in asphalt and concrete surfaces. It has resilient characteristics that allow self threading or memory. It has excellent flow properties and no pinholing. Flex Crac™ is ready to use on roadways, parking lots, airports, athletic courts, driveways, traffic safety islands, playgrounds, and walkways.
Meets or exceeds the following specifications:
| Weight per gallon, ASTM D1010 | 9.20 - 9.60 |
| Nonvolatile %, ASTM D2939 | 68 |
| Viscosity, ASTM D562 | 85 - 95 |
| Penetration (0.1 mm), ASTM D5 | 50 - 60 |
| Application Temp. (°F) | 50 min. |
| Preparation Before use | stir or shake |
| Std. Spec. for Emulsified Asphalt | - |
| AASHTO Designation M140-70 | meets spec. |
| ASTM Designation D977-69 | meets spec. |
| ASTM Designation D244 | meets spec. |
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