Sikadur 31 High-Modulus High-Strength Structural Epoxy Paste Adhesive 1 Gallon

Sika Corporation
Item #
Mfr. Model # 402999

Sikadur 31, Hi-Mod Gel High-Modulus, High-Strength, Structural, Epoxy Paste Adhesive, 1 Gallon

Sikadur® 31, Hi-Mod Gel is a 2-component, 100% solids, moisture-insensitive, high-modulus, high-strength, structural epoxy paste adhesive. It conforms to the current ASTM C-881, Types I and IV, Grade-3, Class-C and AASHTO M-235 specifications


  • Structural bonding of concrete, masonry, metals, wood, etc. to a maximum glue line of 1/8 in. (3mm).
  • Seals cracks and around injection ports prior to pressure-injection grouting.
  • Interior, vertical, and overhead repair of concrete as an epoxy mortar binder.
  • As a pick-proof sealant around windows, doors, lock-ups etc. inside correctional facilities

Characteristics and Advantages:

  • Extended pot life.
  • Moisture-tolerant before, during, and after cure.
  • High-modulus, high-strength, structural paste adhesive.
  • Excellent adhesion to concrete, masonry, metals, wood, and most structural materials.
  • Paste consistency ideal for vertical and overhead applications.
  • Fast-setting and strength-producing adhesive.
  • Convenient easy mix ratio A:B = 2:1 by volume.

Product Details
Specification Description
# of Components: Two Component
Adhesive/Glue Type: Epoxy & Structural Adhesives
Brand Name: Sika Corporation
Brand Part Number: 402999
Class (ASTM C-881): Class B - For Use Between 40-60°F, Class C - For Use Above 60°F
Color: Concrete Gray
Compressive Strength: Varies with Time & Temperature
Consistency: Paste
Cure Time: 1.5 - 2.5 Hours
Elongation at Break: 0.009
Flexural Strength: 6,100 psi
Grade (ASTM C-881): Grade 3 - Non Sag
Heat Deflection Temperature: 135 °F
Model: Sikadur 31
Modulus of Elasticity in Compression: 5.6 x 10^5 psi
Modulus of Elasticity in Flexure: 1.5 x 10^6 psi
Package Type: Pail
Pot Life: 60 Minutes
Primary Application: Construction & Concrete
Shear Strength: 4,600 psi
Shelf Life: 730 Days
Size: 1 Gallon
Specifications Met: AASHTO M-235, ASTM C-881 Type I/IV Grade 3 Class B/C, NSF/ANSI 61
Tensile Adhesion Strength: Varies with Time & Surface
Tensile Modulus of Elasticity: 1.6 x 10^6 psi
Tensile Strength: 3,300 psi
Type (ASTM C-881): Type I - Bonding Hardened Concrete to Hardened Concrete (Non-Load Bearing), Type IV - Bonding Hardened Concrete to Hardened Concrete (Load Bearing)
VOC Content Range: 4 g/L
Water Absorption: 0.0007
$96.33 / each

Expected to ship Tue. May 07
This item cannot be shipped via air carrier. This item has been restricted for sale in the following states: AK, HI, PR If shipping to a state with restrictions, please call for shipping options.