Dymeric® 240FC

Fast-Curing, Multi-Component Polyurethane Sealant

Dymeric® 240FC is a gun-grade, multi-component, chemically-curing, polyurethane sealant that includes a tintable base, curative packet, and a choice of 70 standard colors. A Limestone Pretinted version is also available.

Basic Uses
  • Dymeric 240FC's applications range from pre-cast tilt-up concrete, masonry, and exterior insulating and finishing systems (EIFS), to metal curtain walls, and perimeter joints around doors and windows.
  • It can also be used in certain water immersed applications.
Product Details, Safety, and Installation
  • What is the service temperature range for polyurethane sealants?

    The service temperature range for polyurethane sealants is -40°F to 185°F (-40°C to 85°C).

  • How can I remove excess polyurethane sealant from a substrate or clothing?

    Physically remove excess sealant by wiping, scraping or cutting.  Residual traces of sealant can be removed by wiping the surface with a cloth or abrasive pad saturated with a solvent such as mineral spirits or xylene. Test a hidden area of the surface to be cleaned to ensure no adverse effects due to solvent interaction. Where abrasive pads are used, care should be exercised in order to ensure the surface appearance is not adversely effected.

  • What is the maximum installation temperature for polyurethane sealants?

    The surface temperature of the substrate should be less than 150°F (66°C) at the time the sealant is applied.

  • What is the minimum installation temperature for polyurethane sealants?

    The surface temperature of the substrate should be 40°F (4°C) and rising or above at the time the sealant is applied. It is also recommended that the sealant be stored at room temperature prior to application.

  • Are polyurethane sealants paintable?

    Polyurethane sealants are paintable once they are fully cured. Adhesion of the paint to the sealant should be evaluated through a site mockup to determine appropriateness of use.  Additionally, for applications involving dynamically moving joints, it should be expected that the paint film will tear exposing the sealant below.  For this reason, it is recommended that the sealant and the paint be of similar colors.

  • What is the shelf life for polyurethane sealants?

    The shelf life for Tremco polyurethanes is 6 to 24 months depending on type of sealant and/or packaging. Please contact Technical Service for specific shelf life of a product at 866-209-2404.

Projects Using Dymeric 240FC

SW Florida Regional Med. Center - Gulf Coast Hosp.

Naples, FL

It's imperative that an air barrier system on a medical center or hospital accounts for different temperatures and humidity parameters.

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