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Sika Sikadur 51 SL 4 Gallon Unit

Sikadur 51 SL is a two compnent, self-leveling, 100% solids, flexible, control joint resin sealer and adhesive used to fill horizontal, non-moving, saw cut construction control joints and cracks.

  • Remains flexible
  • Does not age-harden
  • Prevents deterioration of joint edges
$371.90
SKU
19084

Sika Sikadur 51 SL – Self-Leveling Flexible Epoxy Joint Sealer

Sika Sikadur 51 SL is a two-component, 100% solids, self-leveling epoxy resin designed for sealing horizontal, non-moving control joints and cracks. This high-performance, flexible epoxy prevents joint edge deterioration while delivering exceptional durability, impact resistance, and adhesion. With moisture tolerance and shock absorbency, Sikadur 51 SL is ideal for demanding applications, including industrial flooring, concrete joints, and tamper-resistant sealing. Conforming to ACI 302.1R joint material standards, this epoxy sealer is a reliable solution for long-term joint protection.

Key Features:

  • Self-leveling, flexible epoxy for joint sealing
  • 100% solids, solvent-free formula
  • Prevents deterioration of joint edges
  • Shock absorbent and durable for high-traffic areas
  • Withstands wheel traffic and heavy loads
  • Excellent adhesion to concrete and masonry
  • Ideal for tamper-resistant security sealing
  • Can be applied using plural injection systems
  • Moisture-tolerant before, during, and after curing

Applications:

  • Sealing horizontal, non-moving control joints
  • Industrial flooring and warehouse expansion joints
  • Security sealing for tamper-proof applications
  • Impact-resistant joint protection for concrete surfaces
  • Overhead door tracks, loading docks, and high-traffic floors

Technical Specifications:

Property Value
Packaging 4-gallon unit (Component A + B)
Color Concrete gray
Shelf Life 2 years in original, unopened container
Shore D Hardness (ASTM D2240) 50–55 at 28 days
Tensile Strength (ASTM D638) 570 psi (3.9 MPa)
Elongation at Break (ASTM D638) 90%
Mixing Ratio 1:1 by volume (Component A+B)
Pot Life 20-25 minutes (1-gallon mix)
Cure Time (Tack-Free) 7–8 hours

 

Frequently Asked Questions:

Can Sikadur 51 SL be used in moving joints?
No, Sikadur 51 SL is designed for non-moving control joints and is not intended for expansion joints.

How should Sikadur 51 SL be applied?
It can be poured directly into prepared joints or applied with low-pressure extrusion equipment.

More Information
Brand Sika
Size 4 Gallon
Manufacturer Sika
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