Tremco Vulkem 445SSL

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Description for Tremco Vulkem 445SSL

Tremco Vulkem 445SSL is a 2-Part Moisture-curing Polyurethane Paste used to Seal Other horizontal surface, Concrete and Green concrete

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Chemical Resistance	Jet fuel resistance
Application Type	Sealant
1 Part or 2 Part	2-Part
Material Form	Paste
Substrate	Concrete, Metal, Non-Porous, Porous surfaces, Green concrete, Damp concrete
Industry	Formulated for use in expansion joints in sidewalks, Formulated for use in expansion joints in swimming pool deck, Formulated for use in expansion joints in plazas, Formulated for use in expansion joints in floor
Manufacturer	Tremco
Chemistry	Polyurethane
Cure Method	Moisture-curing
Viscosity (cPs)	Semi-self-leveling
Wear Resistance	Exceptional wear resistance
Stain Resistance	No stain, no color change
Key Specifications	TT (U.S. Federal Specification): Meets or exceeds the requirements of ASTM C920, Type M, Grade P, Class 35, Use T, M, A, O and I (Class 2)
Can Be Used In Conjunction With These Materials	Non-chlorinated water

Best Practices for Tremco Vulkem 445SSL

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Technical Data for Tremco Vulkem 445SSL

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Overview

Chemical Resistance
- Chemical Resistance - Jet fuel resistance
Application Type
- Sealant
1 Part or 2 Part
- 2-Part
Material Form
- Paste
Substrate
- Non-Porous Substrates - Non-Porous
- Porous Substrates - Porous surfaces
- Concrete - Green concrete, Damp concrete
- Metal
- Other - Other horizontal surface
Industry
- Joints - Formulated for use in expansion joints in floor, Formulated for use in expansion joints in plazas, Formulated for use in expansion joints in swimming pool deck, Formulated for use in expansion joints in sidewalks
Chemistry
- Polyurethane
Application Method
- Caulking gun - Caulking equipment
Cure Method
- Moisture / Condensation Cure - Moisture-curing
Key Specifications
- TT (U.S. Federal Specification) : ASTMC920 - Meets or exceeds the requirements of ASTM C920, Type M, Grade P, Class 35, Use T, M, A, O and I (Class 2)
Can Be Used In Conjunction With These Materials
- Water-based - Non-chlorinated water

Specifications

Cure Specs

Viscosity (cPs)	Semi-self-leveling
Tack Free Time (min)	90 to 120, <300	Test Method

Bond Strength

General Bond Strength (psi)	30 (pli), 28 (pli), >15 (pli), >15 (pli)	Test Method
Tear Strength (piw)	Exceptional tear resistance, 35 (pli)	Test Method
Tensile Strength (psi)	250	Test Method

Material Resistance

Wear Resistance	Exceptional wear resistance
Stain Resistance	No stain, no color change
UV Resistance	Greater UV resistance

Hardness

Shore A Hardness	40 to 45	Test Method
Elongation (%)	600 to 750	Test Method

Other Properties

Specific Gravity	1.320
Outgassing	3 (%)	Test Method
% Solids (%)	98

Business Information

Shelf Life Details	Store in original, undamaged packaging in a clean, dry, protected location with temperatures between 40 to 110 °F (5 to 43 °C).
Shelf Life Temperature (°F)	41 to 109

Not Good For

Don't Use For	Chlorinated water

Best Practices for Tremco Vulkem 445SSL

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1. Surface Preparation
  
  Surfaces must be sound and clean. All release agents, existing waterproofing, dust, loose mortar, paints, other finishes or field applied coating must be removed. This can be accomplished with a thorough wire brushing, grinding, sandblasting, or solvent washing, depending on the contamination.
  
  Tremco recommends that surface temperatures be 40 °F (5 °C) or above at the time the sealant is applied. If sealant must be applied in temperatures below 40 °F, please refer to the Tremco Technical Bulletin for Applying Sealants in Cold Conditions (No. S-08-44 rev 1) that can be found on our website at www.tremcosealants.com.
  
  Vulkem 445SSL typically adheres to concrete and stone without primers
  
  however, Tremco always recommends that a mock-up or field adhesion test be performed on the actual materials being used on the job to verify the need for a primer. A description of the field adhesion test can be found in appendix X1 of ASTM C1193, Standard Guide for Use of Joint Sealants.
  
  Where deemed necessary, use Vulkem Primer® #191 Low VOC QD for porous surfaces, and TREMprime® Non-Porous Primer for metals.
2. Application
  
  Mix the color pak in accordance with the mixing instructions noted in the Technical Bulletin on Vulkem 445SSL that can be found on our website at www.tremcosealants.com.
  
  Continue mixing until there are no color striations within the sealant.
  
  Apply with conventional caulking equipment, filling in the joint completely, and tool.
  
  Tremco recommends installing a mock-up to determine acceptability of color, texture and adhesion.
3. Curing
  
  At 75 °F (23.9 °C), 50% RH a skin forms within 5 hr. Curing continues at a rate of approximately 1/16" (1.6 mm) depth per day. The cure time will increase as the temperature and/or humidity decrease. A good rule of thumb is one additional day of cure for every 10 °F decrease in temperature. Cure time can be increased by adding water when using pails of Vulkem 445SSL. Please refer to the Technical Bulletin No. S-17-01 on Vulkem 45SSL/445SSL Activator that can be found on our website at www.tremcosealants.com.
4. Clean-Up
  
  Excess sealant adjacent to the joint interface can be carefully removed with xylene or mineral spirits before the sealant cures. Any utensils used for tooling can also be cleaned with xylene or mineral spirits.
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