JS-45 is a self-leveling, 100% solids, two-component modified polyurea-based elastomeric joint sealant. JS-45 is a flexible material that is designed for 25% movement of an installed joint width. A minimum of 28 days is recommended for concrete to effectively cure prior to installing joint filler or joint sealant.
Mix Ratio by Volume
Gel Time (Minutes)
Tack-Free Time (Minutes)
Shore A Hardness ASTM D2240
Shore D Hardness, ASTM D2240
Elongation, ASTM D638, Type IV
Tensile Strength (PSI), ASTM D638, Type IV
Tear Strength (lb./in.), ASTM D624, Die C
Taber Abrasion, ASTM D4060
(H-18 Wheel, 1000 Cycles)
The values stated in this technical data sheet are produced under controlled laboratory conditions.