CRL Tremco® DyMonic® FC Black Polyurethane Joint Sealant

• Fast skin time—less dirt pickup vs. standard polyurethanes
• Primerless adhesion on most common construction substrates
• Available in sausage packs (regular DyMonic® also offered)

CRL Tremco® DyMonic® FC is a fast-skinning, high-performance, low-modulus, one-component moisture-curing polyurethane sealant for construction joints. DyMonic® FC cures to a smooth, consistent surface and guns easily with conventional caulking equipment. With a skin time of approximately one hour at 70°F (21°C), it resists dirt pickup better than regular DyMonic® (typical skin time 16 hours at 70°F / 21°C). Designed for primerless adhesion to most substrates when surfaces are dry, clean, and contaminant-free.

Basic Uses
DyMonic® FC seals dynamic moving joints in precast concrete panels, curtainwall systems, tilt-up panels, expansion and control joints, and window/door perimeters. Also used for bedding mullions, frames, and panels. Its combination of high strength, low modulus, and high recovery provides excellent weather resistance and long-term adhesion for construction and façade joint applications.

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 & Surface Prep
Do not apply to damp or contaminated surfaces. Some substrates—such as certain high-performance paints and architectural finishes—may require priming. Painting over DyMonic® is not recommended because paint may crack or peel with joint movement. Always check the cartridge label and the Specification Data Sheet for additional limitations and surface-prep recommendations.

Comparable Sealants
CRL: M66, M64, 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 contaminated surfaces. Some substrates may require priming. Painting over DyMonic® is not recommended. Refer to the cartridge label and Specification Data Sheet before use.