Sikaflex®-123 MS Bond
Sikaflex®-123 MS Bond is a 1-part, multipurpose adhesive and sealant with a very broad adhesion and sealing profile which bonds and seals most construction material substrates. Internal and external use.
- Bonds well to a wide variety of substrates without surface pre-treatment
- Bonds to damp concrete
- Compatible with with most substrates, EPS/XPS, building wraps and bitumen
- Good mechanical resistance and weathering resistance
- Adhesive-sealant with CE marking
Usage
An adhesive to bond most construction components and materials such as:- Concrete
- Masonry
- Most stones
- Ceramic
- Wood
- Metal
- Glass
- Plastics such as PVC, PA, PET and EPS/XPS
Advantages
- Bonds well to a wide variety of substrates without surface pre-treatment
- Bonds to damp concrete
- Compatible with with most substrates, EPS/XPS, building wraps and bitumen
- Good mechanical resistance and weathering resistance
- Adhesive-sealant with CE marking
Packaging
300 ml cartridge, 12 cartridges per box
Colour
White, grey, black
Product Details
ENVIRONMENTAL INFORMATION
- Conformity with LEED v4 EQc 2: Low-Emitting Materials
- VOC emission classification GEV-EMICODE EC 1PLUS
- VOC emission classification of building materials RTS M1
- Class A+ according to French Regulation on VOC emissions
Chemical Base
Silane terminated polymer
Shelf Life
Twelve (12) months from the date of production when stored as stated.
Storage Conditions
The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +25 °C. Always refer to packaging.
Density
| ~1.50 kg/l | (ISO 1183-1) |
Shore A Hardness
| ~36 (after 28 d) | (ISO 868) |
Tensile Strength
| ~1.5 N/mm² | (ISO 37) |
Secant Tensile Modulus
| ~0.65 N/mm² at 60 % elongation (23°C) | (ISO 8339) |
Elastic Recovery
| ~75 % | (ISO 7389) |
Tear Propagation Resistance
| ~4.5 N/mm | (ISO 34) |
Service Temperature
−50 °C min. / +80 °C max
Joint Design
The joint width must be designed to suit the movement capability of the sealant. The joint width shall be ≥ 6 mm and ≤ 20 mm. A width to depth ratio of 2:1 must be maintained. Joints ≤ 10 mm in width are for crack control and therefore non-movement joints. For larger joints contact Sika Technical Services for additional information.
Application
Backing Material
Use closed cell, polyethylene foam backing rods such as Sika® PEF Rod.
Sag Flow
| 0 mm (20 mm profile, 23°C) | (ISO 7390) |
Ambient Air Temperature
+5 °C min. / +40 °C max
Substrate Temperature
+5 °C min. / +40 °C max., min. 3 °C above dew point temperature
Curing Rate
| ~3 mm/24 h (23 °C / 50 % r.h.) | Sika Corporate Quality Procedure (CQP 049-2) |
Skin Time
| ~35 min (23 °C / 50 % r.h.) | (CQP 019-1) |
Yield
- Bonding
| Yield 300 ml | Dimension |
| ~ 100 spots | Diameter = 30 mm Thickness = 4 mm |
| ~ 15 m bead | Nozzle diameter = 5 mm (~20 ml per linear meter) |
- Sealing
| Joint width (mm) | Joint depth (mm) | Joint length per 300 ml |
| 10 | 10 | 2.9 m |
| 15 | 12 | 1.6 m |
| 20 | 17 | 0.6 m |
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 should be of sufficient strength to resist 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. Sikaflex®-123 MS Bond adheres without primers and/or activators. However, for optimum adhesion, joint durability and critical, high performance applications the following priming and/or pre-treatment procedures shall be followed:
Non-porous substrates
Aluminium, anodised aluminium, stainless steel, PVC, 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® Aktivator-205 applied with a clean cloth. Before bonding / sealing, allow a waiting time of > 15 minutes (< 6 hours).
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 the sealed joint.
CLEANING OF TOOLS
Clean all tools and application equipment immediately after use with Sika® Remover-208. Once cured, hardened material can only be removed mechanically.