HMC Electronics 68035 Loctite 680 Retaining Compound, High Strength - Manual

Technical Data Sheet
LOCTITE
®
680™
December - 2009
PRODUCT DESCRIPTION
LOCTITE
®
680™ provides the following product
characteristics:
Technology Acrylic
Chemical Type Methacrylate ester
Appearance (uncured) Green liquid LMS
Fluorescence Positive under UV light LMS
Components One component - requires no mixing
Viscosity Medium
Cure Anaerobic
Secondary Cure Activator
Application Retaining
Strength High
LOCTITE
®
680™ is designed for the bonding of cylindrical
fitting parts, particularly where low viscosity is required. The
product cures when confined in the absence of air between
close fitting metal surfaces and prevents loosening and
leakage from shock and vibration.
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 1.1
Flash Point - See MSDS
Viscosity, Brookfield - RVT, 25 °C, mPa·s (cP):
Spindle , speed r/min 750 to 1,750 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 5min 10min 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 5min 10min 30min 1h 3h 6h 24h 72h
0.15 mm
0.2 mm
0.05 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 5min 10min 30min 1h 3h 6h 24h 72h
22 °C
5 °C
40 °C
Documentation Provided By HMC Electronics
33 Springdale Ave. Canton, MA 02021
http://www.hmcelectronics.com
(800) 482-4440