Sika

Sikaflex 1C SL Kit - Self Leveling, Polyurethane Sealant - Sikaflex 1C SL 10 oz. (Full or Half Case)-Limestone

Sikaflex 1C SL Kit - Self Leveling, Polyurethane Sealant - Sikaflex 1C SL 10 oz. (Full or Half Case)-Limestone

$98.79 - $172.79

Bulk discount rates

  • Buy 6+ get 5% off
  • SKU: SIK SKF1SSLM10-CS-MXP
  • MPN: Sikaflex 1c SL
  • Availability: Same Day Shipping Applies Monday to Friday if Ordered by 2 PM EST.
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Availability: Same Day Shipping Applies Monday to Friday if Ordered by 2 PM EST.
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Description

Sikaflex®-1c SL is a high-performance, single-component, self-leveling polyurethane sealant designed for horizontal joint sealing in concrete and cementitious slabs. Its pourable, non-sag formula and accelerated curing properties make it ideal for expansion joints and applications subject to occasional water immersion. With excellent durability, adhesion, and elasticity, this sealant provides a weather-resistant, long-lasting seal for a wide range of interior and exterior projects.

Features & Benefits

  • Self-Leveling: Pourable application ideal for flat, horizontal surfaces
  • One-Component: No mixing required; ready to use
  • Accelerated Curing: Tack-free in 1–2 hours, full cure in 3–5 days
  • Excellent Adhesion: Bonds to concrete, aluminum, glass, and more without primer (except immersion use)
  • Highly Elastic: 320% elongation at break with >90% recovery
  • Weather & Jet Fuel Resistant: Long-term performance in exposed and industrial environments
  • Green & Damp Concrete Compatible: Install on green concrete after 24 hrs or damp concrete after 1 hr
  • Paintable: Compatible with many coatings (adhesion testing recommended)
  • Meets Standards: ASTM C-920 & TT-S-00230C
  • Wide Service Range: -40°F to +170°F

Technical Data

Property Value
Shore A Hardness 40 ± 5 (ASTM D2240)
Tensile Strength 150 psi (ASTM D412)
Elongation at Break 320%
Movement Capability ±25% (ASTM C719)
Adhesion (Peel Strength) Concrete >28 lbs, Glass >37 lbs, Aluminum >30 lbs (0% loss)
Tack-Free Time 1–2 hours (ASTM C679)
Full Cure 3–5 days
Service Temperature Range -40°F to +170°F
Packaging Options 10.1 oz, 29 oz, 5 gal, 50 gal
Shelf Life 1 year (cartridges), 6 months (pail/drum)

Recommended Applications

Ideal for use in flat concrete surfaces and horizontal joints in areas where a self-leveling, long-life sealant is needed:

  • Sidewalks & walkways
  • Balconies & plazas
  • Parking structures
  • Pavements & driveways
  • Warehouses & industrial floors
  • Terraces & roof decks
  • Civil structures & water treatment facilities
  • Pitch pans, canals, and horizontal expansion joints

Common Substrates:

  • Concrete (new or green)
  • Cementitious slabs
  • Aluminum
  • Glass
  • Stone or tile (with proper prep)

Application Details

Surface Preparation

  • Surfaces must be clean, sound, dry or damp (no standing water)
  • Remove grease, curing compounds, and other contaminants
  • Install backer rod or bond breaker to control depth and prevent 3-point bonding
  • For green concrete: Wait 24 hrs after pour, control joints cut at least 8 hrs prior
  • For damp concrete: Wait 1 hour after water is removed
  • Primer is required for immersion service

Joint Design

  • Recommended ratio: 2:1 width to depth
  • Depth range: ¼" to ½"
  • Min. depth for traffic areas: ½"
  • Max. movement: ±25% of joint width

Application Conditions

  • Ambient/Substrate Temp: 40°F to 100°F
  • Precondition cartridges to ~70°F for best flow
  • Pour in one direction, allow sealant to level naturally
  • Tooling is minimal but can be used for finishing

Coverage

  • 10.1 oz cartridge: ~24.3 ft (¼" x ¼" joint)
  • 29 oz cartridge: ~69.8 ft (¼" x ¼" joint)