DuroCaulk Epoxy/Urethane Caulk

DUROCAULK is an elastomeric epoxy urethane system, which is designed to be used with epoxy systems as a flexible repair and caulking compound. It is used primarily to fill expansion joints and cover joints. It can be overcoated with other DUROMAR linings or maintenance products to enhance physical or chemical properties, if required.

Features
  • Elongation to 100%
  • Cures at temperatures as low as 60 F
  • No toxic fumes
  • Good bond strengths
Inorganic Acids Good
Organic Acids Good
Solvents Good
Alkalis Good
Salts Excellent
Alcohols Good
Hydrocarbons Good
Density 1.09
Solids 100 percentage
Tensile Strength at 70 F 1000psi
Tensile Adhesion at 70 F 750psi
Max. Dry Operating Temperature 250F
Durometer Shore A 60
Elongation 100 percentage
Packaging 1 gal. unit
1 kg unit
Mixing Ratio 3.6 parts base (B) to 1 part (A) hardener by volume
3.6 parts base (B) to 1 part (A) hardener by weight
Pot Life Working time of material is about 40 minutes.
Color Grey
Red
Coverage
DUROCAULK can be applied with a thickness as small as 1/16″ radius bead to a maximum of 2 inches. Theoretical coverage, for one gallon, is 100 linear feet based on a 1/2″ radius bead in thickness. Different thickness of the applied bead will change the linear foot coverage.
Surface Preparation
  • For maximum adhesion, material should be applied to a firm, clean, dry and abraded surface.
  • Best results will be obtained by abrasive blasting the surface.
  • If blasting is impractical, a grinding wheel, needle gun, or very stiff wire brush may be used.
  • Clean greasy, oily or waxed surfaces with suitable solvent before applying material.
Mixing & Application
Mixing
Mix ALL of Part A with ALL of Part B in the Part B bucket. If the materials are cold, warm them to about 70 F before mixing.

Cleanup
All mixing and applications tools should be immediately wiped or scraped clean when finished with using.

Application
For best results, do not apply:

  • When temperature is below 40 F.
  • To oily surfaces

DUROCAULK may be applied using either a caulking gun or by hand, using a small trowel or putty knife. Press material thoroughly into the substrate and build up to meet the desired thickness. Smooth over to create the desired surface.

Overcoating
Overcoating at 70 F
DUROCAULK can be overcoated to obtain additional chemical resistance. Overcoating can be done as soon as the surface will not be disturbed by the overcoating process. Since DUROCAULK has a thick paste consistency, with care overcoating can be done almost immediately after application.

Curing at 70 F

  • Tack Free (hours) – 8
  • Functional Cure (hours) – 36
  • Full Cure (hours) -120

Q/C
The material should be visually inspected just after application and touched up where necessary.

Force Curing The DUROCAULK cannot be force cured to accelerate curing.
Storage Store in dry area in closed containers between 50 F and 110 F. Shelf life at these conditions is greater than one year.
Health and Safety
READ AND UNDERSTAND ALL MATERIAL GIVEN IN THE MSDS SHEETS BEFORE USING THE PRODUCT.

DUROCAULK DOES NOT CONTAIN ANY FLAMMABLE MATERIAL OF ANY KIND. HOWEVER, THE MATERIAL IS COMBUSTIBLE. IN THE EVENT OF A FIRE, DRY POWDER, FOAM, OR CARBON DIOXIDE FIRE EXTINGUISHERS SHOULD BE USED. FIRE FIGHTERS SHOULD WEAR RESPIRATORS.

USE PROTECTIVE GLOVES AND EYEGLASSES WHEN USING.

USE IN AREAS OF GOOD VENTILATION.

Warranty
All recommendations covering the use of this product are based on past experience and laboratory findings. Methods or conditions of application and use of the product are beyond our control. We assume responsibility only for the uniformity of our product within normal manufacturing balances.

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