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LOCTITE® 680 - Bottle 1.0/case High Strength Retaining Compound

Features and Benefits

This high-strength retaining compound is ideal for slip fitted parts, and also works on inactive surfaces.
LOCTITE® 680 is a green, high strength, anaerobic-curing retaining compound for the assembly and attachment of cylindrical fitting parts, particularly where low viscosity is required. The product prevents loosening and leakage from shock and vibration, and provides robust curing performance by curing on both active metals (e.g. mild steel) and passive substrates (e.g. stainless steel and plated surfaces), as well as slightly oiled or contaminated surfaces, without the need for a primer or cleaner.
  • Low viscosity
  • NSF/ANSI 61 certified up to 82°C (179.6°F)
  • High strength and robust curing performance on inactive surfaces without primer
  • Tolerates minor surface contamination
  • Fluorescent under UV for quality control
Read More

Documents and Downloads

Safety Data Sheets and RoHs
LOCTITE® 680, 250 ml Bottle 1835196 en-US
IDH: 1835196
EAN: 079340006850

Size Case: Bottle

Quantity: 10.0/case

LOCTITE® 680, 50 ml Bottle 1835201 en-US
IDH: 1835201
EAN: 079340006843

Size Case: Bottle

Quantity: 10.0/case

LOCTITE® 680, 1 l Bottle 1835206 en-US
IDH: 1835206
EAN: 079340006867

Size Case: Bottle

Quantity: 1.0/case

LOCTITE® 680, 0.5 ml 1835212 en-US
IDH: 1835212
EAN: 079340006805

Size Case: Tube

Quantity: 100.0/case

No documents found

Technical Information

Agency approvals / certificates / specifications NSF/ANSI, norm 61
Application method Dispense system, Manual, Pressure
Applications For loose fitting parts, For slip fitted parts, Retaining
Color Green
Cure type Anaerobic cure
Fixture time 4.0 min.
Full cure time, @ 22.0 °C 24.0 hr.
Key characteristics Fluorescent, Oil tolerant, Primerless, Strength: high strength
Number of components 1 part
Physical form Liquid
Recommended for use with Metal
Shear strength, Steel 4000.0 psi
Specific gravity, @ 25.0 °C 1.1
Viscosity, Brookfield - RVT, @ 25.0 °C Spindle 3, speed 20 rpm 750.0 - 1750.0 mPa·s (cP)
Viscosity, cone & plate, @ 25.0 °C Shear Rate 129 s⁻¹ 650.0 - 1850.0 mPa·s (cP)

How to

Step by Step Guide

1. Preparation - Cleaning

Use LOCTITE® SF 790 for easier removal of residues such as old retaining adhesive. Recommend use of LOCTITE® SF 7070 to degrease and clean surfaces prior to applying the adhesive. For gaps larger than 0.5mm or worn out shafts, bearing seats or keyways, use LOCTITE® metal-filled compounds or LOCTITE® 660 Retaining Compound.

2. Preparation - Activation

If cure speed is too slow due to passive metals or low temperature (below 5°C), use LOCTITE® SF 7649 Activator (see cure speed vs activator graph in the TDS). Allow to dry.

3a. Application - For Slip-Fitted Assemblies

Apply adhesive around the leading edge of the male component and the inside of the female component and use a rotating motion during assembly to ensure good coverage. Wipe off excess adhesive.

3b. Application - For Press-Fitted Assemblies

Apply 360 degree beads of adhesive to both bond surfaces at the leading edges of insertion or engagement, and assemble at high press-on rates.  Wipe off excess adhesive.

3c. Application - For Shrink-Fitted Assemblies

Apply the adhesive onto the male component; heat the female component to cause expansion for free assembly.  Assemble components and allow temperatures to equilibrate. Wipe of excess adhesive.

4. Disassembly

Apply localized heat to approximately 500°F/260°C; disassemble while hot. For corroded or seized parts, use LOCTITE® LB 8040 Freeze and Release.

Disassembly

For manual assembly of adhesive, the use of the LOCTITE® Pro Pump or the LOCTITE® Peristaltic Hand Pump is recommended to ensure a consistent application volume. For semi-automatic or fully-automated dispensing options, contact our technical service team for advice.

Frequently Asked Questions