ChemLink DuraLink 35 Sealant White 10.1oz Cartridge

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 which is ideal for a wide range of applications including difficult surfaces such as Kynar 500® PVDF and other anodized metals and coatings.

Isocyanate free
+/- 35% joint movement
100% solids - will not shrink

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Availability: In Stock (155)

SKU: 17245

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DuraLink 35 is a professional-grade, moisture-curing polyether sealant formulated for tough commercial, industrial, and residential construction applications. Built to handle dynamic joint movement of up to ±35%, DuraLink 35 provides long-lasting, flexible seals that resist cracking, shrinking, bubbling, and UV discoloration. It performs reliably in both interior and exterior conditions, even when applied to damp substrates or in cold temperatures as low as 32°F — making it a dependable choice for year-round construction and maintenance work.

This advanced elastomeric sealant bonds aggressively to a wide variety of substrates, including coated metal, anodized aluminum, brick, concrete, EIFS, vinyl siding, and fiber cement panels. Its non-slump formulation is ideal for vertical joints, overhead seams, and challenging façade details where standard caulks may fail. DuraLink 35 is 100% solids, solvent-free, and compliant with low-VOC regulations, offering excellent performance without the use of isocyanates. With strong weather resistance, proven color stability, and a broad palette of construction-matching colors, DuraLink 35 meets the demands of building envelope professionals, contractors, and facility managers looking for a high-performance, low-maintenance sealant.

Data Sheet

Key Features

+/- 35% Joint Movement Capability

Provides lasting elasticity for joints subject to thermal movement, vibration, or shifting.

Applies to Damp Surfaces

No bubbling or outgassing — even in humid, wet, or cold jobsite conditions.

Compatible with Difficult Substrates

Bonds to coated metal, anodized aluminum, vinyl siding, EIFS, FRP, and more.

Non-Slump, Vertical Grade Formula

Stays in place on vertical and overhead surfaces without sagging.

Low VOC and Solvent-Free

Contains <22 g/L VOC, meets CARB, SCAQMD, and OTC standards.

Paintable and Color-Stable

Maintains appearance in sunlight and can be painted after curing (verify paint compatibility).

Recommened Uses for DuraLink 35

DuraLink 35 is a versatile sealant engineered for a wide range of demanding construction applications across commercial, industrial, and residential projects. It maintains strong adhesion and flexibility in environments where conventional sealants often fail — such as damp surfaces, cold weather, or difficult-to-bond substrates.

Typical uses include sealing around window and door perimeters, expansion joints in concrete and masonry, and control joints in exterior siding systems. It is also ideal for roof terminations, parapet details, and cove joints where vertical or overhead application is required. DuraLink 35 excels in sealing dissimilar substrates in façade assemblies, offering a long-lasting, weather-resistant joint with excellent movement capability and color stability.

Frequently Asked Questions

What is the skin-over time for DuraLink 35?

Approximately 40 minutes at 73°F and 45% relative humidity. Tooling should be done within 15 minutes of application.

Can DuraLink 35 be applied to damp surfaces?

Yes. It adheres well to damp, but not visibly wet or submerged, substrates without bubbling or outgassing.

Is a primer required before application?

In most cases, no primer is needed. However, high-movement joints or dissimilar substrates may benefit from a ChemLink-recommended primer.

What is the service temperature range?

DuraLink 35 remains flexible and functional from -40°F to 200°F (-40°C to 93°C).

Is DuraLink 35 compatible with painted surfaces?

It is paintable within 24 hours, but users should test paint compatibility, especially with oil-based or polyurethane paints.

What is the shelf life?

12 months for cartridges when stored properly at room temperature and 50% RH.

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