CF-621 is designed for interior saw cut/control joints and cracks in concrete slabs on grade. Not recommended for expansion joints or exterior applications. Ideal for most type services in chemical processing plants, pulp and paper mills, sewage and waste treatment facilities, warehouses, fertilizer plants, petroleum refineries, electric generating stations, coal handling operations, marine installations, to name a few.
Up to 100% Elongation.
Good resistance to steel wheel traffic.
Very resilient and tough.
Outstanding water tight bond to concrete.
Helps to prevent erosion of control joint edges.
Easy to work with, cold applied, no special equipment needed.
Excellent adhesion to concrete.
BOND COHESION AFTER WATER IMMERSION: No Failure after 25% total movement
TENSILE STRENGTH: (ASTM D638): 600 psi
ELONGATION (ASTM D638): 80% – 100%
TEAR RESISTANCE: (ASTM D624 73): 30 lb/in.
MINIMUM JOINT DEPTH: 1”
MAXIMUM JOINT WIDTH: 3/4”
ARTIFICATIAL WEATHERING (ASTM G23-75 Type D) 10-15% elastomeric property change after 1,000 hours. (Fed Spec TT-5-00227E)
SHORE A HARDNESS: 70-80
@ 75°F: Set hard: 8-10 hours; full cure 5-7 days.
(2 gal. unit) 1/4″ x 1″ = 154 linear feet
2 gal. units
1:1 by volume. Mix 1 part A base with 1 part B hardener
20 minutes @ 70°F
Pour, tool, caulking gun
55F° – 120°F
S-74 or SA-17