Sikaflex®-15 LM is a low-modulus, high-performance, 1-component, polyurethane-based, non-sag elastomericsealant.
Low modulus of elasticity
Easy and ready to use
Eliminates time, effort, waste, and equipment clean-up
High elasticity – cures to a tough, durable, flexible consistency with exceptional cut and tear resistance
TECHNICAL INFORMATION Shore A Hardness ~25 (after 21 days) (ASTM C661) ~25 (after 28 days) (ISO 868) Elongation at Break ~700 % (ASTM D412) Elastic Recovery >80 % Movement Capability +100 / -50 % (ASTM C719) Chemical Resistance Good resistance to water, diluted acids, and diluted alkalines. Not normally designed for fully immersed conditions. Contact Sika Canada Technical Service for specific data. Resistance to Weathering 0 (no cracks) (ASTM C793)
Stress relaxation
Very good adhesion – bonds to most construction materials without primer
Usage
Typical applications include:
Joints in concrete panel and wall systems, around window and door frames, reglets, flashing, common roofing detail applications, etc.
Moving joints in vertical applications.
Exterior Insulation Finish Systems (EIFS)
High-rise and facade applications where high movement capability is required.
2- and 3-hour UL Fire Rated Joint System Nos. FF-S-0007, FF-S-0037, FW-S-0015, FW-S-0018, HW-S-0076, HW-S-0095, WW-S-0011 and WW-S-0060
Advantages
Low modulus of elasticity
Easy and ready to use
Eliminates time, effort, waste, and equipment clean-up
High elasticity – cures to a tough, durable, flexible consistency with exceptional cut and tear resistance
Stress relaxation
Very good adhesion – bonds to most construction materials without primer
Suitable for use between similar as well as dissimilar materials.
Very good resistance to weathering
Proven in tough climates around the world
Urethane-based, suggested by EPA for radon reduction
Can be painted
Jet fuel resistant
Proven in tough climates around the world
Non-leaching
Movement capability of +100 / -50 % (ASTM C719)
Packaging
300 mL (10.1 fl. oz) cartridge - 24/case590 mL (20 fl. oz) sausage - 20/case
Colour
White, Aluminum Grey, Limestone, Black, Dark Bronze, Capitol Tan,
Off-White. Special colours on request (min. volume)
Product Details
Sustainability / Certifications / Approvals
ENVIRONMENTAL INFORMATION
Contributes towards satisfying LEED® – EQ/MR Credit: Low-Emitting Materials
APPROVALS / CERTIFICATES
Meets Federal Specification TT-S-00230C, Type II, Class A; ASTM C-920, Type S, Grade NS, Class 100/50, use T, NT, G, A, O, M
Meets Federal Specification for silicones - TT-S-001543 A, Type non-sag
Tested in accordance with ASTM C1382 for use in EIFS systems
Storage Conditions
Store in dry conditions, protected from direct sunlight and at temperatures between 4 °C and 35 °C (40 °F and 95 °F). Condition material to 18 °C – 24 °C (65 °F – 75 °F) before use.
Ambient Air Temperature
Minimum: 4 °C (40 °F) / Maximum: 38 °C (100 °F)
Note: Sealants should be installed when substrates are at mid-range of their anticipated movement. Temperature must be at least 3 °C (5 °F) above the dew point
Substrate Temperature
Minimum: 4 °C (40 °F) / Maximum: 38 °C (100 °F)
Note: Sealants should be installed when substrates are at mid-range of their anticipated movement.
Curing Time
Tack-free time: 2 to 6 hours (TT-S-00230C)
Tack-free (to touch): 3 hours
Final cure: 7 to 10 days
Shore A Hardness ~25 (after 21 days) (ASTM C661) ~25 (after 28 days) (ISO 868) Elongation at Break ~700 % (ASTM D412) Elastic Recovery >80 % Movement Capability +100 / -50 % (ASTM C719) Chemical Resistance Good resistance to water, diluted acids, and diluted alkalines. Not normally designed for fully immersed conditions. Contact Sika Canada Technical Service for specific data. Resistance to Weathering 0 (no cracks) (ASTM C793)
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