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TECHNICAL DATA SHEET I SECTION 7.5
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POLY-CAULK JS-45
Self-Leveling Joint Sealant

Product Description
Poly-Caulk JS-45 is a self-leveling, 100% solids, two- Technical Data (Based on Draw Down Film)
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component modified polyurea-based elastomeric joint sealant. Mix Ratio by Volume 1A : 1B
Poly-Caulk JS-45 is a flexible material that is designed for
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25% movement of an installed joint width. A minimum of 28 Specific Gravity, 1.07 + 0.1
days is recommended for concrete to effectively cure prior to Side-A 1.01 + 0.1
installing joint filler or joint sealant. Side-B
VOC 0%
Features Gel Time, ASTM D1640 2-3 minutes
• 100% Solids Pot Life, ASTM D1640 3-4 minutes
• Cures from -20°F to 130°F (-29°C to 54°C)
• Exceptional Elongation Tack-Free Time, ASTM D1640 at <5 minutes
• No Toxic Vapor, Odorless 77°F (25°C), 50% R.H.
• No VOCs Open to Foot Traffic, 2 hours
• Remains Flexible in Cold Temperatures ASTM D1640
• Resists Jet Fuel Hardness, ASTM D2240 45 ± 3 Shore A
• USDA/FSIS approved Tensile Strength, ASTM D638, 325 ± 50 psi
Type IV 2.24 ± 0.3 MPa
Typical Uses Elongation, ASTM D638, Type IV 425 ± 50%
Poly-Caulk JS-45 is designed to seal cracks, contraction joints, Tear Strength, ASTM D624 80 ± 10 pli
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and control joints on new or old horizontal concrete surfaces. 14.0 ± 1.75 kN/m
It can be applied on slabs where rapid turn around and return
to use is needed because of how quickly the product cures. Tabor Abrasion, mg wt. loss 20-75
Poly-Caulk JS-45’s memory capability allows for normal (1000 g, 1000 revs, H-18),
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joint movement and accommodates slab movement where ASTM D4060
designed movement and thermal cycling will occur. Total Solids by Weight, 100%
NOTE: Joints should be designed and prepared according to ASTM D2369
industry standards when using Poly-Caulk JS-45. In order to Total Solids by Volume, 100%
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achieve optimum movement, sealant depth should be ½ the ASTM D2697
sealant width—under no circumstances should the depth be
greater than 1 inch in any joint configuration.
• Balcony Decks Linear Feet Per Gallon
• Bridge Decks Width of Joint
• Industrial Facilities 1/4” 1/2” 3/4” 1”
• Parking Decks
• Roofing 1/4” 249 138 92 64
• Sidewalks Depth of Joint 1/2” 138 69 45 34
• Water and Waste Water Treatment 3/4” 92 45 30 23

Packaging 1” 64 34 23 17
600 ml-Cartridge: 300 ml Side-A 300ml Side-B packaged as a
dual tube cartridge. Cartridges sold in cases of 4 or 10.
Linear Feet Per 600 ml
10-Gallon Kit: one 5 gallon (18.9 liter) pail of Side-A and one
5 gallon (18.9 liter) pail Side-B Width of Joint
Color 1/4” 1/2” 3/4” 1”
Concrete Grey 1/4” 32 24 16 11
Coverage Depth of Joint 1/2” 24 11 8 6
The figures are estimated coverage rates and can vary on the 3/4” 16 8 5 3
joint conditions. The above numbers a lot for 10% material 1” 11 6 3 2
waste due to overfilling.
The values stated in this technical data sheet are producedunder controlled laboratory
Mixing conditions.
Poly-Caulk JS-45 requires machine dispensing: use a 1:1 ratio
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pump with or without heater

POLYCOAT PRODUCTS TEL 562.802.8834 | FAX 562.921.7363 Section 7.5
info@polycoatusa.com | www.polycoatusa.com