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All Categories > Chemical Resistant Caulking and Joint Sealants > DuroCaulk Epoxy/Urethane Caulk > Item # - DuroCaulk

Item # DuroCaulk, 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 ºF
  • No toxic fumes
  • Good bond strengths
Inorganic AcidsGood
Organic AcidsGood
SolventsGood
AlkalisGood
SaltsExcellent
AlcoholsGood
HydrocarbonsGood
Density1.09
Solids100 percentage
Tensile Strength at 70 ºF1000 psi
Tensile Adhesion at 70 ºF750 psi
Max. Dry Operating Temperature250 ºF
Durometer Shore A60
Elongation100 percentage
Packaging1 gal. unit 
1 kg unit
Mixing Ratio3.6 parts base (B) to 1 part (A) hardener by volume 
3.6 parts base (B) to 1 part (A) hardener by weight
Pot LifeWorking time of material is about 40 minutes.
ColorGrey 
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 ºF 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 ºF.
  • 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 ºF
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 ºF
  • 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 CuringThe DUROCAULK cannot be force cured to accelerate curing.
StorageStore in dry area in closed containers between 50 ºF and 110 ºF. 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.