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paste epoxies


Bonds Most Everything to Nearly Anything!


PC-7® is the tough job epoxy! This paste epoxy was formulated for maximum bonding power. When mixed, components A (grey) and B (black) reacts to form a bond of tremendous strength. PC-7® formulation provides extended working time, for large and critical jobs, which allow the user to reposition work or make changes. High “wet grab” or tack of PC-7® Paste Epoxy makes overhead and sidewall work easy without drip or sag. PC-7® demonstrates excellent chemical resistance to mild acids, caustics, detergents, gasoline, fuel oil, salt, and fresh water.
***Note: PC-7® will not bond to wax paper, Teflon®, Polyethylene, and some other plastics. There are hundreds of plastics in thousands of combination. Test a small area when in doubt.


Using separate knives to remove amount needed, mix equal parts A (grey) and B (black) on flat clean surface until uniform color is achieved. Surfaces to be bonded must be free of dirt, oil, rust, etc. For best results, rough up the surface PC-7® will be bonding to. Normally, no vice or clamp needed. Prop or tape heavy objects to a wall or ceiling.

Apply PC-7® Epoxy Paste in any thickness to both sides of surface and bring together firmly. Be careful to insure that ample amount of PC-7® remains between the contact surfaces. Use screen wire or fiberglass cloth to reinforce large voids and gaps.

Denatured alcohol is excellent for smoothing applied PC-7®. Also use Denatured alcohol to clean surfaces before applying.

After cure: Paint Drill, Machine, Sand, File, Tap, or Saw.

Additional Information

Available Sizes - Links to Purchase:

  • PART #
  • 2 OZ
  • 027776
  • Buy From Grainger  Lowe's  Buy From The Paint Store  Amazon Supply
  • 1/2 LB
  • 087770
  • Buy From Grainger  Buy From Home Depot  Buy From The Paint Store  Amazon Supply
  • 1 LB
  • 167779
  • Buy From Grainger  Buy From Home Depot  Buy From The Paint Store  Amazon Supply
  • 4 LB
  • 647776
  • Buy From Grainger  Buy From Home Depot  Buy From The Paint Store  Amazon Supply
  • 8 LB
  • 128770
  • Buy From Grainger  Buy From Home Depot  Buy From The Paint Store  Amazon Supply
  • 90 LB
  • 909072
  •    Buy From The Paint Store  Amazon Supply

Mixing Tips:

Approximately equal amounts of A and B by volume; variations of either component as high as 20%will not affect the bond strength. When desirable, one part of A to two parts B may be used to increase elasticity (expansion joints, etc.). In cold or cool temperatures, place PC-7® container near heat prior to using. PC-7® mixes and spreads easier at 80°F than at 40 F. Any clean smooth flat surface is an excellent surface for mixing and working. A small putty knife or flexible artist spatula are great tools for mixing and applying PC-7®.
***Note: Most epoxies are temperature sensitive and will cure faster at higher temperatures and slower at cooler temperatures. Speed cure with artificial heat.

PC-7® has hundreds, if not thousands, of uses.

As Adhesive: Wood, Metal (all types), Glass, Brick, Block, Rubber, Concrete, Stone, Slate, Fiberglass, tile, and more in any and all combinations.
As Sealant: Oil, Gas, Water Tanks, Cellar Cracks, Pressure Tanks, and Plumbing Leaks.
As a Filler: Holes, Castings, Patterns, Molds, Voids, Welds, Steering Wheels and much more.
View All Uses

Physical Properties

  • Color (Component a):
  • Light Gray
  • Color (Component B):
  • Black
  • Color (Mixed):
  • Dark Gray
  • Work Time (70°F):
  • 60 Minutes
  • Tack Free Cure Time:
  • 160 Minutes
  • Cure for Service:
  • 24 Hours
  • Maximum Cure:
  • 7 Day
  • Gardner Impact Resistance:
  • 160 in./Lb
  • Elongation:
  • 2%
  • Conduction (Electric):
  • Non Conductive
  • Thermal Shock:
  • Excellent
  • Toxicity:
  • Non Toxic Once Cured
  • Heat Range:
  • -20 to 200°F

Test Methods/Results

  • Tensile Shear Strength
  • ASTM D 1002
  • 2150 PSI
  • Compressive Yield
  • ASTM D 695
  • 4245 PSI
  • Flexural Strength
  • ASTM C 580
  • 2920 PSI
  • Water Absorption
  • ASTM C 413
  • 0.44%
  • Weight(Specific Gravity)
  • ASTM D 792
  • 1.16g/cm³ .671oz/in³
  • Hardness Shored
  • ASTM D 2240
  • 76 (1wk)
  • Heat Deflection
  • ASTM D 648
  • 120°F

Technical Data