Chemlink DuraLink 35 is a multi-purpose, moisture cure, elastomeric sealant that combines economy and high performance for uses from window sealant to sealing joints in door frames, parapets, and block & masonry. DuraLink 35 has excellent elastomeric properties and ideal for a wide range of applications.
ChemLink DuraLink 35 is a multi-purpose, moisture-curing polyether sealant designed for flexible, long-lasting joint performance. With ±35% joint movement capability, it provides excellent adhesion to difficult substrates such as Kynar 500 PVDF-coated metals, anodized aluminum, and masonry. This non-slump sealant applies vertically and overhead without sagging, and it will not shrink, bubble on damp surfaces, or discolor under UV exposure. Its black finish offers a durable, professional appearance for construction and industrial projects.
| Technology | Moisture-curing polyether |
| Movement Capability | ±35% (ASTM C920, Class 35) |
| Viscosity | 1,300,000 ± 300,000 cp |
| Density | 12.0 ± 0.2 lbs/gal (ASTM D1475) |
| Tack-Free Time | 40 minutes (ASTM C679) |
| Elongation at Break | 420% (ASTM D412) |
| Tensile Strength | 230 psi (ASTM D412) |
| Peel Strength | 25 pli (ASTM C794) |
| Lap Shear Strength | 225 psi (ASTM D1002) |
| Hardness | Shore A: 31 (ASTM C661) |
| Low-Temperature Flexibility | Pass at -10°F (-23°C), 1/4 in mandrel bend |
| Shrinkage | No visible shrinkage after 14 days |
| Service Temperature | -40°F to 200°F (-40°C to 93°C) |
| VOC Content | < 22 g/L (ASTM D2369, EPA Method 24) |
| Certifications | ASTM C920, TT-S-00230C, CRD-C-541, CAN 19.13-M82, SWRI Validated |
| Packaging | 10.1 oz cartridges, 20 oz sausages, 2 & 5 gallon pails, 50 gallon drums |
| Shelf Life | 12 months (cartridges), 6 months (pails) |
What joint movement can DuraLink 35 accommodate?
It is rated for ±35% joint movement, making it suitable for dynamic construction conditions.
Can it be used on damp concrete?
Yes. DuraLink 35 does not outgas on damp or green concrete, ensuring reliable adhesion.
Is it UV resistant?
Yes. It resists sunlight exposure without discoloring or degrading.
What substrates will it bond to?
Metals, concrete, masonry, stone, siding, EIFS, and coated or anodized aluminum.
What colors are available?
A wide range of roofing and siding colors are available, including Black.
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