CRL Tremco DyMonic FC White Polyurethane Sealant - Flexible, Exterior

• Fast skin time reduces dirt pick-up
• Primerless adhesion on most common construction substrates
• Regular DyMonic® available in sausage packs

CRL Tremco® DyMonic® FC is a one-component, moisture-curing polyurethane sealant engineered for construction joints requiring high movement capability. It features a non-sag, gunnable consistency and forms a smooth, consistent surface when cured. DyMonic® FC skins in approximately one hour at 70°F (21°C), minimizing dirt pick-up versus standard polyurethanes (regular DyMonic® typical skin time: 16 hours at 70°F/21°C). Its low-modulus formulation provides high recovery, strong adhesive bonds, and excellent weather resistance for long-term joint performance.

Basic Uses
DyMonic® FC is designed for sealing dynamic moving joints in precast concrete panels, curtainwall, tilt-up panels, expansion and control joints, perimeter caulking of windows and doors, and bedding of mullions, frames, and panels. Ideal as a fast-skin polyurethane sealant for construction and façade joints where reduced dirt pick-up and primerless adhesion on common substrates are required.

Technical Data
Meets U.S. Federal Specification TT-S-00230C, Type II, Class A; Canadian standard CAN/CGSB-19.13-M87; and ASTM C 920, Type S, Grade NS, Class 50 (DyMonic® FC) / Class 25 (DyMonic®), Use NT, M, A and O.

Limitations
Do not apply to damp or contaminated surfaces. Some substrates (for example certain high-performance paints or architectural finishes) may require priming. Painting over DyMonic® is not recommended—paint may crack or peel with joint movement. Refer to cartridge label and the Specification Data Sheet for additional limitations.

Comparable Sealants
CRL: M66 Polyurethane Sealant, M64 Polyurethane Sealant, M65W PermaWhite. Tremco®: Vulkem® 116, Vulkem 921, TremGlaze U1400, TremPro 626. Sika®: 1A, 15LM. Sonneborn: NP1. Pecora: Dynatrol 1. OSI: PR-255. Schnee Moorehead: 7100. Bostik: Chem-Calk 900.

Product Warning:
Do not apply to damp or