







Sika® Crystal Clear MS
Sika® Crystal Clear MS is a 1-part, multipurpose transparent adhesive and sealant with good initial grab which bonds and seals most construction material substrates. Internal and external use.
- Transparent Glass‐like clarity
- MS Technology
- Good initial grab
- Very low emissions
- Easy to tool and finish
- Paintable
- Excellent adhesion
- Solvent free
- Isocyanate free
- Virtually odourless
- Non‐corrosive
Usage
- An adhesive to bond most construction components and materials such as:
▪ Concrete
▪ Masonry
▪ Most stones
▪ Ceramic
▪ Wood
▪ Metals
▪ Glass
▪ PVC - A sealant to seal around bonded components.
- Interior and exterior sealing and bonding applications (refer to limitations section)
- Bonding interior fittings and assembly work
Advantages
- Transparent Glass‐like clarity
- MS Technology
- Good initial grab
- Very low emissions
- Easy to tool and finish
- Paintable
- Excellent adhesion
- Solvent free
- Isocyanate free
- Virtually odourless
- Non‐corrosive
Packaging
300 ml cartridges, 12 cartridges per carton
Colour
Transparent
Product Details
ENVIRONMENTAL INFORMATION
- Conformity with LEED v4 EQc 2: Low-Emitting Materials
- VOC emissions classification GEV-EMICODE EC 1PLUS
- Class A+ according to French Regulation on VOC emissions
APPROVALS / STANDARDS
- CE Marking and Declaration of Performance to EN15651-1 - Sealants for non-structural use in joints in buildings - Facade elements: Class F EXT-INT 20HM
Chemical Base
Silane terminated polymer
Shelf Life
Twelve (12) months from date of production when stored as stated.
Storage Conditions
Store in cool, dry conditions, out of direct sunlight at temperatures between + 5 °C and + 25 °C.
Density
~1.05 kg/l | (ISO 1183-1) |
Shore A Hardness
~48 (after 28 d) | (ISO 868) |
Tensile Strength
~2.5 N/mm2 | (ISO 37 - rod 1) |
Tear Propagation Resistance
~4.0 N/mm (ISO 34)
Service Temperature
−40 °C min. / +70 °C max.
Application
Sag Flow
0 mm (20 mm profile, 23 °C)
Ambient Air Temperature
+5 °C to +40 °C.
Substrate Temperature
+5 °C min. / +40 °C max., min. 3 °C above dew point temperature
Backing Material
Use closed cell polyethylene foam backing rod (PEF Rod)
Curing Rate
~3 mm/24 h (23 °C, 50 % r.h.)
Skin Time
~10 minutes (+23 °C, 50 % r.h.)
SUBSTRATE PREPARATION
The substrate must be sound, clean, dry and free of all contaminants such as dirt, oil, grease, cement laitance, old sealants and poorly bonded paint coatings which could affect adhesion of the adhesive / sealant. The substrate must be of sufficient strength to manage
with the stresses induced by the sealant during movement.
Removal techniques such as wire brushing, grinding, sanding or other suitable mechanical tools can be used.
All dust, loose and friable material must be completely removed from all surfaces before application of any activators, primers or adhesive / sealant. For optimum adhesion, joint durability and critical, high performance applications the following priming and/or pre-treatment procedures must be followed:
Non-porous substrates
Aluminium, anodised aluminium, stainless steel, galvanised steel, powder coated metals or glazed tiles, slightly roughen surface with a fine abrasive pad. Clean and pre-treat using Sika® Aktivator-205 applied with a clean cloth. Before bonding / sealing, allow a waiting time of > 15
minutes (< 6 hours).
Other metals, such as copper, brass and titanium-zinc, clean and pre-treat using Sika® Aktivator-205 applied with a clean cloth. After a waiting time of > 15 minutes (< 6 hours). Apply Sika® Primer-3 N applied by brush. Allow a further waiting time of > 30 minutes (< 8 hours) before bonding / sealing.
PVC has to be cleaned and pre-treated using Sika® MultiPrimer Marine applied with a brush. Allow a waiting time of > 15 minutes (< 8 hours) before bonding / sealing.
Porous substrates
Concrete, aerated concrete and cement based renders, mortars and bricks, prime surface using Sika® Primer-3 N applied by brush.
Before bonding / sealing, allow a waiting time of > 30 minutes (< 8 hours).
For more detailed advice and instructions contact Sika Technical Services.
Note: Primers are adhesion promoters and not an alternative
to improve poor preparation / cleaning of
joint surfaces. Primers also improve the long term adhesion
performance of a sealed joint.
CLEANING OF TOOLS
Wipe off any uncured excess sealant immediately, and clean up with Sika Thinner C or mineral turpentine. Cured material can only be removed
mechanically.