Hybrids like the Chem-Set MS35 or Chem-Set 75AM are silane-crosslinking organic polymers that combine the properties that are typical of both silicone and polyurethane, while eliminating their individual inherent weaknesses. And let’s just say that the combination really pays off. Hybrid sealants combine the adhesive strength and paintability of polyurethane with the weathering resistance of silicones.

Let’s take a look at the two high-quality hybrid sealants offered in Chemical Concepts’ own Chem-Set brand.

Chem-Set MS-35
Chem-Set™ MS-35 is a one component, high modulus, mildew resistant multipurpose silyl-terminated polyether (hybrid) elastomeric sealant and adhesive. When fully cured, this unique VOC compliant formula offers UV stability and firm bonding to PVC, concrete, glass, aluminum, painted surfaces, wood, plywood, marble, metal, plus many other common substrates. This product is specifically formulated to offer all weather performance to meet today’s Green Building Standards. This is available in a 10.3 oz. cartridge.

Chem-Set 75AM Ultra Clear
Chem-Set 75AM Ultra Clear is a new generation, environmentally friendly product that replaces silicone and urethane sealants. 75AM Ultra Clear is designed for bonding and sealing a wide variety of building materials such as Kynar ®, Galvalume®, painted surfaces, PVC, glass, steel, aluminum, tile, FRP, granite, marble, concrete, wood and many plastics. Cures fast and remains flexible, is non-sag and has exceptional resistance to weathering and temperature extremes. 75AM Ultra Clear does not contain solvents or isocyanates and remains flexible when fully cured. USDA accepted. This is available in a 10.3 oz. cartridge or in a 5 gallon pail.

Both of these products offer similar features and can be used on the same types of applications.

Features and Benefits:

• Excellent Adhesion.
• Adhesion to Kynar ®.
• Non-Corrosive.
• Paintable.
• Flexible and Durable.
• Will Not Shrink or Crack.
• VOC Compliant.
• Contains No Solvents or Isocyanates.
• Color Stability and UV Resistant.
• Non-Yellowing/Staining.
• Resistant to Most Chemicals.

Applications:

• Sealing Openings and Exterior Surfaces.
  
• HVAC/R.
  
• Plumbing.
  
• Roofing.
  
• Kitchen and Bath.
  
• Countertops.
  
• Sanitary Seals.
  
• Precast Concrete.
  
• Industrial Gaskets.
  
• Transportation Seals.
  
• Marine Cabins.
  
• Appliance Trim and Parts.
  
• Interior/Exterior Use.
  
• Above Grade.

The Importance of UV Stability

Ultraviolet radiation can be the “kryptonite” of sorts for many polymers, as well as natural and synthetic ingredients. This damage is known as UV degradation. When exposed to UV rays, many caulks and sealants will crack and shrink. And once that happens, it’s easy to guess what happens to the tight seal that they may have once created. A UV stable product, such as Chem-Set MS-35 and Chem-Set 75AM Ultra Clear, however, can withstand even the harshest UV exposure.

Hybrid sealants truly stand out with their stand-alone UV stable features, causing a long-lasting ability to not dry out and crack as it ages. The material will offer years of flexibility, as well as providing critical moisture and air penetration protection.

Another common problem with products that do not offer UV stability is the potential of water infiltration. Once water makes its way through the front line of a sealant and breaches the surface, you may be in for lots of headaches, like mold, adhesion failure and damage to the substrate.

We believe these hybrid sealants give you an opportunity to enjoy the best of both worlds, with the inherent best qualities of silicones and polyurethanes combined in one complete package.

Our sales team will be happy to give you more details and discuss how you can benefit from our Chem-Set hybrid sealants. Give us a call today at 800-220-1966 or contact us via this form.