HMC Electronics 66040-LOC Loctite 660 Retaining Compound, Quick Metal User Manual
Loctite
Technical Data Sheet
LOCTITE
®
660™
December
-
2009
PRODUCT DESCRIPTION
LOCTITE
®
660™
provides
the
following
product
characteristics:
Technology
Acrylic
Chemical Type
Urethane methacrylate
Appearance (uncured)
Metallic gray paste
LMS
Fluorescence
No
Components
One component - requires no mixing
Viscosity
High
Cure
Anaerobic
Secondary Cure
Activator
Application
Retaining
Strength
High
LOCTITE
®
660™ is designed for the bonding of cylindrical
fitting parts, particularly where bond gaps can approach 0.50
mm (0.02 in.). The product cures when confined in the absence
of air between close fitting metal surfaces and prevents
loosening and leakage from shock and vibration. This product
possesses
excellent
gap
cure
characteristics.
Typical
applications include restoring correct fits on worn shafts, spun
bearings, and damaged keyways.
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.
TYPICAL PROPERTIES OF UNCURED MATERIAL
Specific Gravity @ 25 °C
1.13
Flash Point - See MSDS
Viscosity, Brookfield - HBT, 25 °C, mPa·s (cP):
Spindle TB, speed 0.5 rpm,
Helipath
1,000,000 to 2,000,000
LMS
Spindle TB, speed 5.0 rpm,
Helipath
150,000 to 350,000
LMS
TYPICAL CURING PERFORMANCE
Cure Speed vs. Substrate
The rate of cure will depend on the substrate used. The graph
below shows the shear strength developed with time on steel
pins and collars compared to different materials 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
Steel
Aluminum
Zinc dichromate
Cure Speed vs. Bond Gap
The rate of cure will depend on the bondline gap. 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
0.154 mm
0.27 mm
Cure Speed vs. Temperature
The rate of cure will depend on the temperature. The graph
below shows the shear strength developed with time at
different temperatures on steel pins and collars 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
4 °C
40 °C
22 °C
Documentation Provided By HMC Electronics
33 Springdale Ave. Canton, MA 02021
(800) 482-4440