Technical Data Sheet
LOCTITE® 243™
(TDS for new formulation of Loctite®243™) March-2012
PRODUCT DESCRIPTION
LOCTITE® 243™ provides the following product
characteristics:
Technology Acrylic
Chemical Type Dimethacrylate ester
Appearance (uncured) Blue liquidLMS
Fluorescence Positive under UV lightLMS
Components One component -
requires no mixing
Viscosity Medium, thixotropic
Cure Anaerobic
Secondary Cure Activator
Application Threadlocking
Strength Medium
This Technical Data Sheet is valid for LOCTITE® 243™
manufactured from the dates outlined in the
"Manufacturing Date Reference" section.
LOCTITE® 243™ is designed for the locking and sealing of
threaded fasteners which require normal disassembly with
standard hand tools. The product cures when confined in the
absence of air between close fitting metal surfaces and
prevents loosening and leakage from shock and vibration. The
thixotropic nature of LOCTITE® 243™ reduces the migration of
liquid product after application to the substrate. LOCTITE®
243™ provides robust curing performance. It not only works
on active metals (e.g. brass, copper) but also on passive
substrates such as stainless steel and plated surfaces. The
product offers high temperature performance and oil tolerance.
It tolerates minor surface contaminations from various oils,
such as cutting, lubrication, anti-corrosion and protection fluids.
NSF International
Registered to NSF Category P1 for use as a sealant where
there is no possibilty of food contact in and around food
processing areas. Note: This is a regional approval. Please
contact your local Technical Service Center for more
information and clarification.
NSF International
Certified to ANSI/NSF Standard 61 for use in commercial and
residential potable water systems not exceeding 82° C. Note:
This is a regional approval. Please contact your local Technical
Service Center for more information and clarification.
TYPICAL PROPERTIES OF UNCURED MATERIAL
Specific Gravity @ 25 °C 1.08
Flash Point - See SDS
Viscosity, Brookfield - RVT, 25 °C, mPa·s (cP):
Spindle 3, speed 20 rpm, 1,300 to 3,000LMS
Viscosity, Cone & Plate, 25 °C, mPa·s (cP):
Cone 35/2°Ti @ shear rate 129 s-1 350
TYPICAL CURING PERFORMANCE
Cure Speed vs. Substrate
The rate of cure will depend on the substrate used. The graph
below shows the breakaway strength developed with time on
M10 steel nuts and bolts compared to different materials and
tested according to ISO 10964.
% of Full Strength on Steel
Cure Time
100
75
50
25
0
1min 5min10min 30min 1h 3h 6h 24h 72h
Brass
Stainless steel
Zinc dichromate
Cr free, Zinc organic
Steel
Cure Speed vs. Bond Gap
The rate of cure will depend on the bondline gap. Gaps in
threaded fasteners depends on thread type, quality and size.
The following graph shows shear strength developed with time
on steel pins and collars at different controlled gaps and tested
according to ISO 10123.
% of Full Strength on Steel
Cure Time
100
75
50
25
0
1min 5min10min 30min 1h 3h 6h 24h 72h
0.05 mm
0.15 mm
0.25 mm
TDS LOCTITE® 243™, March-2012
Cure Speed vs. Temperature
The rate of cure will depend on the temperature. The graph
below shows the breakaway strength developed with time at
different temperatures on M10 steel nuts and bolts and tested
according to ISO 10964.
% of Full Strength on Steel
Cure Time
120
100
80
60
40
20
0
1min 5min10min 30min 1h 3h 6h 24h 72h
5 °C
22 °C
40 °C
Cure Speed vs. Activator
Where cure speed is unacceptably long, or large gaps are
present, applying activator to the surface will improve cure
speed. The graph below shows the breakaway strength
developed with time on M10 zinc dichromate steel nuts and
bolts using Activator 7471™, 7649™, 7088™ and 7091™ and
tested according to ISO 10964.
% of Full Strength on Steel
Cure Time
100
80
60
40
20
0
1min 5min10min 30min 1h 3h 6h 24h 72h
7471™
7649™
7088™
7091™
No Activator
TYPICAL PERFORMANCE OF CURED MATERIAL
Adhesive Properties
Cured for 24 hours @ 22 °C
Breakaway Torque, ISO 10964, Unseated:
M10 steel nuts and bolts N·m 26
(lb.in.) (230)
M6 steel nuts and bolts N·m 3
(lb.in.) (26)
M16 steel nuts and bolts N·m 44
(lb.in.) (390)
3/8 x 16 steel nuts and bolts N·m 12
(lb.in.) (106)
Prevail Torque @ 180°, ISO 10964, Unseated:
M10 steel nuts and bolts N·m 5
(lb.in.) (40)
M6 steel nuts and bolts N·m 1
(lb.in.) (8)
M16 steel nuts and bolts N·m 13
(lb.in.) (115)
3/8 x 16 steel nuts and bolts N·m 3
(lb.in.) (26)
Breakloose Torque, ISO 10964, Pre-torqued to 5 N·m:
M10 steel nuts and bolts N·m 24
(lb.in.) (210)
3/8 x 16 steel nuts and bolts N·m 15
(lb.in.) (130)
Prevail Torque @ 180°, ISO 10964, Pre-torqued to 5 N·m:
M10 steel nuts and bolts N·m 4
(lb.in.) (35)
3/8 x 16 steel nuts and bolts N·m 3.5
(lb.in.) (30)
Compressive Shear Strength, ISO 10123:
Steel pins and collars N/mm² ≥7.6LMS
(psi) (≥1,100)
Cured for 1 week @ 22 °C
Breakloose Torque, ISO 10964, Pre-torqued to 5 N·m:
M10 zinc phosphate nuts and bolts N·m 26
(lb.in.) (230)
M10 stainless steel nuts and bolts N·m 17
(lb.in.) (150)
TYPICAL ENVIRONMENTAL RESISTANCE
Cured for 1 week @ 22 °C
Breakloose Torque, ISO 10964, Pre-torqued to 5 N·m:
M10 zinc phosphate steel nuts and bolts
Hot Strength
Tested at temperature
% Strength @ 22 °C
Temperature, °C
120
100
80
60
40
20
0
0 50 100 150 200
Henkel Americas
+860.571.5100
Henkel Europe
+49.89.320800.1800
Henkel Asia Pacific
+86.21.2891.8859
For the most direct access to local sales and technical support visit: www.henkel.com/industrial
TDS LOCTITE® 243™, March-2012
Heat Aging
Aged at temperature indicated and tested @ 22 °C
% Initial Strength @ 22 °C
Exposure Time, hours
150
125
100
75
50
25
0
0 1000 2000 3000 4000 5000
100 °C
120 °C
150 °C
180 °C
200 °C
Heat Aging/Hot Strength
Aged under conditions indicated and tested at temperature
% Initial Strength @ 22 °C
Exposure Time, hours
120
100
80
60
40
20
0
0 1000 2000 3000 4000 5000
100 °C
120 °C
150 °C
180 °C
200 °C
Chemical/Solvent Resistance
Aged under conditions indicated and tested @ 22 °C.
% of initial strength
Environment °C 500 h 1000 h 5000 h
Motor oil 125 110 115 115
Unleaded gasoline 22 100 95 100
Brake fluid 22 105 110 125
Water/glycol 50/50 87 120 125 130
Acetone 22 85 85 80
Ethanol 22 95 90 90
E85 Ethanol fuel 22 95 100 95
B100 Bio-Diesel 22 110 110 125
DEF (AdBlue®)22 61 59 70
Breakloose Torque, ISO 10964, Pre-torqued to 5 N·m:
M10 Stainless steel nuts and bolts
% of initial strength
Environment °C 500 h 1000 h 5000 h
Sodium Hydroxide, 20% 22 105 105 95
Phosphoric Acid, 10% 22 110 105 110
GENERAL INFORMATION
This product is not recommended for use in pure oxygen and/or
oxygen rich systems and should not be selected as a sealant for
chlorine or other strong oxidizing materials.
For safe handling information on this product, consult the Safety
Data Sheet (SDS).
Where aqueous washing systems are used to clean the surfaces
before bonding, it is important to check for compatibility of the washing
solution with the adhesive. In some cases these aqueous washes can
affect the cure and performance of the adhesive.
This product is not normally recommended for use on plastics
(particularly thermoplastic materials where stress cracking of the
plastic could result). Users are recommended to confirm compatibility
of the product with such substrates.
Directions for use:
For Assembly
1. For best results, clean all surfaces (external and internal) with a
LOCTITE® cleaning solvent and allow to dry.
2. If the cure speed is too slow, use appropriate activator. Please
see the Cure Speed vs. Activator graph for reference. Allow the
activator to dry when needed.
3. Shake the product thoroughly before use.
4. To prevent the product from clogging in the nozzle, do not allow
the tip to touch metal surfaces during application.
5. For Thru Holes, apply several drops of the product onto the bolt
at the nut engagement area.
6. For Blind Holes, apply several drops of the product to the lower
third of the internal threads in the blind hole, or the bottom of the
blind hole.
7. For Sealing Applications, apply a 360° bead of product to the
leading threads of the male fitting, leaving the first thread free.
Force the material into the threads to thouroughly fill the voids.
For bigger threads and voids, adjust product amount accordingly
and apply a 360° bead of product on the female threads also.
8. Assemble and tighten as required.
For Disassembly
1. Remove with standard hand tools.
2. In rare instances where hand tools do not work because of
excessive engagement length, apply localized heat to nut or bolt
to approximately 250 °C. Disassemble while hot.
3. Apply localized heat to the assembly to approximately 250
°C. Disassemble while hot.
For Cleanup
1. Cured product can be removed with a combination of soaking in
a Loctite solvent and mechanical abrasion such as a wire brush.
Loctite Material SpecificationLMS
LMS dated June-29, 2009. Test reports for each batch are available
for the indicated properties. LMS test reports include selected QC test
parameters considered appropriate to specifications for customer use.
Additionally, comprehensive controls are in place to assure product
quality and consistency. Special customer specification requirements
may be coordinated through Henkel Quality.
Storage
Store product in the unopened container in a dry location. Storage
information may be indicated on the product container labeling.
Optimal Storage: 8 °C to 21 °C. Storage below 8 °C or greater
than 28 °C can adversely affect product propertiesMaterial
removed from containers may be contaminated during use. Do not
return product to the original container. Henkel Corporation cannot
assume responsibility for product which has been contaminated or
stored under conditions other than those previously indicated. If
additional information is required, please contact your local Technical
Service Center or Customer Service Representative.
Henkel Americas
+860.571.5100
Henkel Europe
+49.89.320800.1800
Henkel Asia Pacific
+86.21.2891.8859
For the most direct access to local sales and technical support visit: www.henkel.com/industrial
TDS LOCTITE® 243™, March-2012
Conversions
(°C x 1.8) + 32 = °F
kV/mm x 25.4 = V/mil
mm / 25.4 = inches
µm / 25.4 = mil
N x 0.225 = lb
N/mm x 5.71 = lb/in
N/mm² x 145 = psi
MPa x 145 = psi
N·m x 8.851 = lb·in
N·m x 0.738 = lb·ft
N·mm x 0.142 = oz·in
mPa·s = cP
Manufacturing Date Reference
This Technical Data Sheet is valid for LOCTITE® 243™ manufactured
from the dates below:
Made in: First manufacturing date:
EU July 2013
Brazil July 2010
China August 2009
India August 2009
U.S.A. December 2009
The manufacturing date can be determined from the batch code on the
pack. For assistance please contact your local Technical Service
Center or Customer Service Representative.
Note:
The information provided in this Technical Data Sheet (TDS) including the
recommendations for use and application of the product are based on our
knowledge and experience of the product as at the date of this TDS. The product
can have a variety of different applications as well as differing application and
working conditions in your environment that are beyond our control. Henkel is,
therefore, not liable for the suitability of our product for the production processes
and conditions in respect of which you use them, as well as the intended
applications and results. We strongly recommend that you carry out your own
prior trials to confirm such suitability of our product.
Any liability in respect of the information in the Technical Data Sheet or any other
written or oral recommendation(s) regarding the concerned product is excluded,
except if otherwise explicitly agreed and except in relation to death or personal
injury caused by our negligence and any liability under any applicable mandatory
product liability law.
In case products are delivered by Henkel Belgium NV, Henkel Electronic
Materials NV, Henkel Nederland BV, Henkel Technologies France SAS and
Henkel France SA please additionally note the following:
In case Henkel would be nevertheless held liable, on whatever legal ground,
Henkel’s liability will in no event exceed the amount of the concerned delivery.
In case products are delivered by Henkel Colombiana, S.A.S. the following
disclaimer is applicable:
The information provided in this Technical Data Sheet (TDS) including the
recommendations for use and application of the product are based on our
knowledge and experience of the product as at the date of this TDS. Henkel is,
therefore, not liable for the suitability of our product for the production processes
and conditions in respect of which you use them, as well as the intended
applications and results. We strongly recommend that you carry out your own
prior trials to confirm such suitability of our product.
Any liability in respect of the information in the Technical Data Sheet or any other
written or oral recommendation(s) regarding the concerned product is excluded,
except if otherwise explicitly agreed and except in relation to death or personal
injury caused by our negligence and any liability under any applicable mandatory
product liability law.
In case products are delivered by Henkel Corporation, Resin Technology
Group, Inc., or Henkel Canada Corporation, the following disclaimer is
applicable:
The data contained herein are furnished for information only and are believed to
be reliable. We cannot assume responsibility for the results obtained by others
over whose methods we have no control. It is the user's responsibility to
determine suitability for the user's purpose of any production methods mentioned
herein and to adopt such precautions as may be advisable for the protection of
property and of persons against any hazards that may be involved in the handling
and use thereof. In light of the foregoing, Henkel Corporation specifically
disclaims all warranties expressed or implied, including warranties of
merchantability or fitness for a particular purpose, arising from sale or use
of Henkel Corporation’s products. Henkel Corporation specifically
disclaims any liability for consequential or incidental damages of any kind,
including lost profits. The discussion herein of various processes or
compositions is not to be interpreted as representation that they are free from
domination of patents owned by others or as a license under any Henkel
Corporation patents that may cover such processes or compositions. We
recommend that each prospective user test his proposed application before
repetitive use, using this data as a guide. This product may be covered by one or
more United States or foreign patents or patent applications.
Trademark usage
Except as otherwise noted, all trademarks in this document are trademarks of
Henkel Corporation in the U.S. and elsewhere. ® denotes a trademark
registered in the U.S. Patent and Trademark Office.
Reference 0.4
Henkel Americas
+860.571.5100
Henkel Europe
+49.89.320800.1800
Henkel Asia Pacific
+86.21.2891.8859
For the most direct access to local sales and technical support visit: www.henkel.com/industrial
