‘Do It Right’ User’s Guide - LOCTITE Maintenance Products - Threadlocking, Thread Repair & Sealing

Nov 2, 2026

Uploaded by adawds

A practical maintenance user guide that helps maintenance professionals select and use Henkel LOCTITE® maintenance products with step-by-step preventive and repair techniques. It explains anaerobic adhesives and sealants, core operating variables, and when primers are required for active vs inactive metal surfaces. Detailed procedures cover threadlocking for thru and blind holes, thread repair for stripped threads, thread sealing for standard pipe fittings, and guidance for porosity sealing, gasket methods, shaft and housed component repairs, disassembly, bonding, rustproofing, cleaning, and troubleshooting.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages40

Reading Time1 h 41 min

AccessFree to download

INTRODUCTION

Introduction to Anaerobic Adhesives and Sealants

Why Use a Primer?

THREADLOCKING

Thru Holes (Bolts and Nuts)

Blind Holes (Cap Screws, etc.)

Blind Holes (Studs, etc.)

THREAD REPAIR

Stripped Thread Repair

THREAD SEALING

Standard Fittings – Pipes, Hydraulic or Air

Pipe Unions

Compression Fittings

Flared/Swaged Fittings

Hose Ends – Air & Hydraulic

POROSITY SEALING

Existing Weld Porosities and Castings

Sealing New Welds – Preventive Maintenance

FORM-IN-PLACE GASKETING

Sealing Cast Rigid Flanges

Gasketing Quick Selector

GASKET DRESSING

Sealed Flanges

FORM-IN-PLACE SILICONES

Stamped or Sheet Metal Flanges

STRENGTHEN KEYED ASSEMBLIES

Standard Duty

Heavy Duty

Repairing Badly Wallowed Keyway

SHAFT MOUNTED ASSEMBLIES

Repairing Badly Worn Shaft

Slip Fit – Light/Heavy Duty

Press Fit

Shrink Fit

HOUSED COMPONENTS

Slip Fit

Repairing Badly Worn Housing

Component Centering

Sealing/Retaining – Metallic Seal Retaining Compound Quick Selector

DISASSEMBLY

Threadlocking, Thread Sealing & Retaining Gasketing

SHAFT REPAIR

General Information

BONDING

Introduction to Bonding Adhesives

Bonding Assembly

Surface Preparation

Adhesive Quick Selector

O-Ring Making

Bonding Metal Label

Filling Cracks

Structural Bonding

RUSTPROOFING

LOCTITE® Extend® Rust Treatment

CLEANING

General Purpose Parts Cleaning

TROUBLESHOOTING

Checklist

ORDERING

Product Listing/Order Information

Global Distributor of Henkel LOCTITE (800) 888-0698 [info@ellsworth.com](info@ellsworth.com) ‘Do It Right’ User’s Guide When, Where & How to Use LOCTITE® Maintenance Products The primary function of this User’s Guide is to help you, the maintenance professional, with the proper selection and use of LOCTITE® products. A wide variety of preventive maintenance, as well as repair techniques, is explained in step-by-step detail. Consider this a supplemental service manual for every piece of equipment in your plant. Our goal is to make it easier for you to use our products, to your benefit, for faster repair times, reduced downtime and extended equipment life. Additional information on these products, as well as others, is available by contacting your local LOCTITE® Adhesives and Sealants Specialist atthe telephone number listed on the back cover of this guide. CONTENTS page INTRODUCTION Introduction to Anaerobic Adhesives and Sealants 4 Why Use a Primer? 4 | THREADLOCKING | Thru Holes (Bolts and Nuts) | 5 | | --- | --- | --- | | | Blind Holes (Cap Screws, etc.) | 5 | | | Blind Holes (Studs, etc.) | 6 | | | Adjustment Screws | 6 | | | Pre-Assembled Fasteners | 7 | | | Threadlocker Quick Selector | 7 | | THREAD REPAIR | Stripped Thread Repair | 8 | THREAD SEALING Standard Fittings – Pipes, Hydraulic or Air 9 Pipe Unions 9 Compression Fittings 10 Flared/Swaged Fittings 10 Hose Ends – Air & Hydraulic 11 Thread Sealant Quick Selector 11 CONTENTS page POROSITY SEALING Existing Weld Porosities and Castings 12 Sealing New Welds – Preventive Maintenance 12 | FORM-IN-PLACE GASKETING | Sealing Cast Rigid Flanges
Gasketing Quick Selector | 13
13 | | --- | --- | --- | | GASKET DRESSING | Sealed Flanges | 14 | | FORM-IN-PLACE SILICONES | Stamped or Sheet Metal Flanges | 15 | | STRENGTHEN KEYED ASSEMBLIES | Standard Duty
Heavy Duty
Repairing Badly Wallowed Keyway | 16
17
18 | | SHAFT MOUNTED ASSEMBLIES | Repairing Badly Worn Shaft
Slip Fit – Light/Heavy Duty
Press Fit
Shrink Fit | 19
20
21
22 | | HOUSED COMPONENTS | Slip Fit
Repairing Badly Worn Housing
Component Centering
Sealing/Retaining – Metallic Seal Retaining Compound Quick Selector | 23
24
25
26
27 | | DISASSEMBLY | Threadlocking, Thread Sealing & Retaining Gasketing | 28
28 | | SHAFT REPAIR | General Information | 29 | | BONDING | Introduction to Bonding Adhesives Bonding Assembly
Surface Preparation
Adhesive Quick Selector
O-Ring Making
Bonding Metal Label
Filling Cracks
Structural Bonding | 30
30
31
31
32
32
33
33 | | RUSTPROOFING | LOCTITE® Extend® Rust Treatment | 34 | | CLEANING | General Purpose Parts Cleaning | 35 | | TROUBLESHOOTING | Checklist | 36 | ORDERING Product Listing/Order Information 37 INTRODUCTION INTRODUCTION TO ANAEROBIC ADHESIVES AND SEALANTS Anaerobic adhesives and sealants were developed by the founder of LOCTITE Corporation, now Henkel Corporation, in 1953 and, since then, they have significantly evolved to meet the highest requirements of equipment manufacturers, maintenance and overhaul. Anaerobic adhesives and sealants are resins that convert from liquid to a tough structural solid in the absence of air and the presence of metal. The primary functions of anaerobic resins are: Each one of these functions is based upon control of five major variables: strength, viscosity, adhesion, flexibility and temperature resistance. These five parameters give anaerobics users considerable latitude in adjusting properties for optimum performance in specific application areas. Another variable that should be considered is the substrate in which the adhesive will be applied. For certain substrates or other special requirements, the use of primer is recommended. WHY USE A PRIMER? 1. Primers activate inactive surfaces which are not required with primerless products. 2. Primers speed cure times for faster return to servic

FAQs

What is the purpose of anaerobic adhesives and sealants in this guide?

They convert from liquid to a tough structural solid in the absence of air and the presence of metal, providing core functions that support reliable maintenance and overhaul needs.

When should a primer be used?

Primer use is recommended for certain substrates or special requirements. It activates inactive surfaces, speeds cure times, helps through larger gaps and deep threads, and supports curing on cold parts.

How are threadlocking procedures different for thru holes vs blind holes?

Thru holes (bolts and nuts) use cleaning, optional priming, selection of the proper strength threadlocker, applying drops at the targeted engagement area, then assembling and tightening as usual. Blind holes use cleaning and priming, then application patterns suited to whether it is onto threads or onto liquid only, with specific guidance by type of blind hole.

Nov 2, 2026

Uploaded by adawds