Hmc-electronics 68035 Loctite 680 Retaining Compound, High Strengt User Manual download pdf

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

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

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

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

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Summary of Contents

Page 1 - December-2009

Technical Data Sheet LOCTITE®680™December-2009 PRODUCT DESCRIPTIONLOCTITE®680™ provides the following productcharacteristics:Technology AcrylicChemic

Page 2 - (800) 482-4440

TDS LOCTITE®680™, December-2009Cure Speed vs. ActivatorWhere cure speed is unacceptably long, or large gaps arepresent, applying activator to the sur

Page 3

TDS LOCTITE®680™, December-2009GENERAL INFORMATIONThis product is not recommended for use in pure oxygenand/or oxygen rich systems and should not be

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Hmc-electronics 68035 Loctite 680 Retaining Compound, High Strengt User Manual

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