SV313 20KG Expansion Joint Self Leveling Polyurethane Sealant for Concrete Joints

Short Description:

SV313 is a one-component, moisture-curing, self-leveling polyurethane sealant engineered for horizontal expansion joints in rigid pavements — airport runways and aprons, concrete highways, bridges, warehouse floors and industrial traffic areas. It flows into the joint under its own weight and cures into a low-modulus elastomer with ≥800% elongation at break and Shore A hardness ≥15, allowing it to absorb cyclic thermal movement without tearing, cracking or debonding. Service range is -40 °C to +80 °C; no primer is required on clean, dry concrete, and no tooling is needed after pouring. Additionally, SV313 exhibits excellent resistance to UV radiation, moisture, and chemical exposure, ensuring longevity and reliability in demanding environments.Available in 20 kg drums, 600 ml sausages and 300 ml cartridges, with grey, black and white as standard colors.

Color: gray/black/white

Packing: 20kg/300ml/600ml

Certification: ASTM D5893/ASTM D7116/ASTM C920

OEM / ODM: Private label, custom color, custom formulation and custom carton available from 1,000 pcs

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Product Detail

Product Tags

Product Description

The Best Sealant for Expansion Joints in Concrete

https://www.siwaysealants.com/sv313-20kg-polyurethane-expansion-joint-self-leveling-pu-sealant-for-airport-runway-product/

FEATURES

* Excellent adhesion with former cleaned PU sealant.
* One Component, ready-to-use.
* Good adhesion with concrete materials.
* Fast cure.
* Good weathering resistance and high durability.
* No pollution
* Can be painted.

Typical Properties

These values are not intended for use in preparing specifications

Property	Value
Appearance	Grey/black self-leveling liquid
Density (g/cm³)	1.35±0.1
Tack Free Time (Hr)	≤ 5
Hardness (Shore A)	≥15
Resilience Rate (%)	70
Curing Speed (mm/24h)	3 ～ 5
Elongation at Break (%)	≥800
Solid Content (%)	≥95
Operation Temperature ( ℃)	5-35 ℃
Service Temperature ( ℃)	-40~+80 ℃
Shelf Life (Month)	9

APPLICATIONS

Highlights

1.EASY VERSATILE APPLICATION: Apply self-leveling concrete pu sealant to expansion joints without concern for uneven surfacing. Perfect for driveways, garages, sidewalks, or pavement

2.TOP CHOICE FOR CONCRETE JOINTS CAULKING: Perfect for use as a concrete self-leveling compound on driveways, warehouses, factories, and civil structures. Narrow tip makes for easy and accurate application

3.EXCELLENT SELF-LEVELING PERFORMANCE: Formulated for horizontal surfaces, this polyurethane sealant automatically flows into gaps, ensuring a perfectly smooth, uniform, and professional finish on concrete floors without manual tooling.

4.HIGH ELASTICITY & MOISTURE CURED: Cures into a tough, highly flexible, and elastomeric seal (Elongation at break > 400%). Effectively absorbs joint movement and resists tearing, cracking, or abrasion under heavy traffic.

5.ALL-WEATHER & CHEMICAL RESISTANCE: Engineered for both indoor and outdoor applications. It withstands intense UV rays, extreme temperatures, moisture, and harsh chemical exposure (fuels, oils), making it ideal for garage floors and industrial pathways.

6.VERSATILE CONCRETE JOINT FILLER: The perfect heavy-duty caulking solution for expansion joints, driveways, sidewalks, warehouses, factories, and civil structures. It delivers exceptional adhesion even in submerged conditions like canal or reservoir joints.

7.DIRECT FACTORY OEM/ODM SERVICES: Manufactured by a Top 10 silicone & PU sealant factory in China with ISO9001/14001 certification. We offer full private label support, customized colors, tailored formulations, and agile packaging to fit your brand needs.

8.Good Adhesion: polyurethane based, high performance, moisture cured and elastomeric sealant. Not only for most construction materials, but also for submerged conditions, such as canal and reservoir joints.

1. Joints in rigid pavements of airports and concrete roads
2. Joints in concrete floors
3. Indoor and outdoor applications for pedestrian and traffic areas (petrol station, decks, car parks)
4. Floor joints in warehouses and production areas
5. Joints in waste water treatment plants (Please check with our Technical Department before use)
6. Floor joints in tunnel construction

PACKAGING

Pack	Quantity per box	Net weight / volume	Typical use
20 kg drum	36 drums per pallet	20 kg ≈ 14.8 L	Runway, highway and large floor joints; machine pouring
600 ml sausage	20 per box	600 ml	Medium joints, bulk caulking guns
300 ml cartridge	24 per box	300 ml	Repair work, small joints, retail

How Much Sealant Do You Need?

One 20 kg drum contains approximately 14.8 L of sealant (density 1.35 g/cm³). Coverage depends on joint geometry:

Joint width × depth	Volume per metre	20 kg drum covers	600 ml sausage covers
10 × 10 mm	0.10 L/m	≈148 m	≈6 m
15 × 10 mm	0.15 L/m	≈99 m	≈4 m
20 × 10 mm	0.20 L/m	≈74 m	≈3 m
25 × 15 mm	0.38 L/m	≈39 m	≈1.6 m
30 × 20 mm	0.60 L/m	≈25 m	≈1 m

Add 8–10% for loss, joint irregularity and residue in drums and hoses. Send us your joint layout and we will return a drum quantity with the quotation.

Original Equipment Manufacturer (OEM) and Original Design Manufacturer (ODM) polyurethane sealants are customized formulations of polyurethane-based adhesives and sealants. Companies seeking a specialized product can work with a manufacturer to develop a sealant with specific properties for their intended application

Product Information

Self-leveling

1. Easy operation,applied directly on various basement of construction. 2. High bonding strength, the liquid polymer can penetrate into the seam of basement. 3. Excellent elasticity, good adaptability to base expansion or cracking, high tensile strength, high elongation at break (＞800%)