Technical Data Sheet
Product 660
Worldwide Version, October 1995
% of Full Strength on steel
50
TYPICAL APPLICATIONS
Used to bond cylindrical fitting parts, particularly where bond
gaps can approach 0.50mm. Typical applications include
restoring correct fits on worn shafts, spun bearings, and
damaged keyways.
PROPERTIES OF UNCURED MATERIAL
Typical
Chemical Type
Appearance
Specific Gravity @ 25擄C
Viscosity @ 25擄C, mPa.s (cP)
Brookfield HBT
Spindle TB @ 5 rpm
Spindle TB @ 0.5 rpm
Flash Point (TCC),
擄C
Value
Urethane
Methacrylate
Grey paste
1.13
1,200,000
250,000
1,500,000
>93
Range
25
0
5min 10min
30min 1hr
0.1
54
mm
PRODUCT DESCRIPTION
LOCTITE
廬
Product 660 is a single component, anaerobic
paste consistency retaining adhesive for cylindrical joints.
This product cures when confined in the absence of air
between metal surfaces. This product possesses excellent
gap cure characteristics.
100
75
0.27m m
3hr
6hr
24hr
72hr
Cure Time, Hours
Cure speed vs. temperature
The rate of cure will depend on the temperature. The graph
below shows shear strength developed with time on steel
pins and collars at different temperatures and tested
according to ISO 10123.
% of Full Strength on steel
100
40擄C
150,000 to 350,000
1,000,000 to 2,000,000
75
22擄C
50
4 擄C
TYPICAL CURING PERFORMANCE
Cure speed vs. substrate
The rate of cure will depend on substrate used. The graph
below shows 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
100
25
0
5min 10min
30min 1hr
3hr
6hr
24hr
72hr
Cure Time, Hours
75
Steel
Aluminium
50
Zn Dichromate
25
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 shear strength developed
with time using ACTIVATOR N and T on zinc dichromate
steel pins and collars and tested according to ISO 10123.
% of Full Strength on steel
100
0
5min 10min 30min 1hr
3hr
6hr
24hr
72hr
75
Act T
Cure Time, Hours
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.
50
Act N
25
0
5min 10min
30min 1hr
3hr
No Activator
6hr
24hr
72hr
Cure Time, Hours
TYPICAL PROPERTIES OF CURED MATERIAL
Physical Properties
Coefficient of thermal expansion, ASTM D696, K
-1
Coefficient of thermal conductivity, ASTM C177, W.m
1
K
-1
-
80 x 10
-
6
0.1
0.3
<2
Specific Heat , kJ.kg
-1
K
-1
% Elongation at break, ASTM D412
NOT FOR PRODUCT SPECIFICATIONS
THE TECHNICAL DATA CONTAINED HEREIN ARE INTENDED AS REFERENCE ONLY.
PLEASE CONTACT LOCTITE CORPORATION QUALITY DEPARTMENT FOR ASSISTANCE AND RECOMMENDATIONS ON SPECIFICATIONS FOR THIS PRODUCT.
ROCKY HILL, CT FAX: +1 (860)-571-5473
DUBLIN, IRELAND FAX: +353-(1)-451 - 9959
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