What is Loctite 566 used for?

It is designed for locking and sealing metal pipes and threaded fittings.

What strength does this thread sealant provide?

It is a low-strength sealant, allowing joints to be disassembled with hand tools.

Which media does Loctite 566 seal against?

It seals against water, oil, and most common organic materials.

How does this product cure?

It cures anaerobically in the absence of air between close-fitting metal surfaces.

What is the volume of this bottle?

This bottle contains 50 ml of liquid sealant.

LOCTITE 566 low-strength threadlocker for metal pipes and fittings (50 ml bottle) - 135490

Name: LOCTITE 566 low-strength threadlocker for metal pipes and fittings (50 ml bottle) - 135490
Brand: LOCTITE
SKU: 11990009
Price: 49.2 EUR
Availability: PreOrder

Supplier number: LOCTITE 135490 | EAN 5010266566306

Recommended Retail Price €62.21

49.20 tax incl.

€40.66 excl. VAT (incl. all environmental contributions)

On order: delivered from 16/11/2026

Ordered before 20:00 - delivered as of 16/11/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

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Reliable sealing with Loctite 566

Practical benefits

Dependable pipe thread sealing: You seal metal pipes and fittings effectively against leaks of water, oil, and common fluids.
Easy disassembly with handtools: The low-strength formulation lets you disassemble threaded connections easily using standard hand tools during maintenance.
Resists vibration and shock: The anaerobic liquid cures between mating metal surfaces to prevent loosening caused by operational vibrations.

In a nutshell

The right choise for

With Loctite 566 thread sealant, you reliably lock and seal metal pipes and threaded fittings against leaks of water, oil, and liquids. The anaerobic liquid cures between close-fitting metal surfaces, preventing connections from loosening due to operational shocks and vibrations. Thanks to its low-strength formulation, you handle routine maintenance with ease, effortlessly disassembling joints using standard hand tools without damaging the threads. This practical 50 ml bottle gives you the exact sealing control needed for demanding piping installations.

Product information FAQ

€49.20

tax incl.

Key features according to our expert

Net volume: 50 ml
ADR packing group: Not applicable
ADR class: Not applicable
UN number: Not applicable
Principal hazard property: GHS07 Harmful or irritant
Relative density: 1,05
P-statements: P101; P102; P261; P337 + P313; P501
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Packaging: Bottle
H-statements: H319; H335

Product description:

LOCTITE 566

Characteristics:

LOCTITE 566 is a brown, liquid threadlocker based on dimethacrylate ester developed for securing and sealing metal pipes and fittings.
It is used for sealing against water, oil and most common organic materials.

Hazard statements

H319: Causes serious eye irritation.
H335: May cause respiratory irritation.

Precautionary statements

P101: If medical advice is needed, have product container or label at hand.
P102: Keep out of reach of children.
P261: Avoid breathing dust/fume/gas/mist/vapours/spray.
P337 + P313: If eye irritation persists: Get medical advice/attention.
P501: Dispose of contents/container to ... (see safety data sheet).

All Features

Net volume: 50 ml
Adr packing group: Not applicable
Adr class: Not applicable
Un number: Not applicable
Principal hazard property: GHS07 Harmful or irritant
Relative density: 1,05
P-statements: P101; P102; P261; P337 + P313; P501
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Packaging: Bottle
H-statements: H319; H335

Brand LOCTITE
11990009
EAN 5010266566306
Supplier number LOCTITE 135490

Frequently asked questions about this product

Answered by specialists

What is Loctite 566 used for?: It is designed for locking and sealing metal pipes and threaded fittings.
What strength does this thread sealant provide?: It is a low-strength sealant, allowing joints to be disassembled with hand tools.
Which media does Loctite 566 seal against?: It seals against water, oil, and most common organic materials.
How does this product cure?: It cures anaerobically in the absence of air between close-fitting metal surfaces.
What is the volume of this bottle?: This bottle contains 50 ml of liquid sealant.