What is Loctite 574 used for?

It is used for sealing close-fitting joints between rigid metal faces and flanges, such as gearbox and engine casings.

How does this flange sealant cure?

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

What is the maximum gap size Loctite 574 can fill?

It is designed for close-fitting flanged connections with gaps up to 0.25 mm.

Does the seal resist pressure immediately after assembly?

Yes, it provides resistance to low pressures immediately after the flanges are assembled.

Is this product suitable for plastics?

No, this sealant is specifically formulated for rigid metal flanges and is not recommended for plastics.

LOCTITE 574 surface sealant (250 ml bottle) - 231561

Name: LOCTITE 574 surface sealant (250 ml bottle) - 231561
Brand: LOCTITE
SKU: 11010253
Price: 125.2 EUR
Availability: InStock

Supplier number: LOCTITE 231561 | EAN 5010266223414

Recommended Retail Price €158.35

125.20 tax incl.

€103.47 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered as of 05/10/2026
Free shipping
Delivery by DHL
Delivered from Belgium

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How does it work?

For a purchase value of €99 to €125 excl. VAT, receive FREE LOCTITE 55 thread sealing cord 50 m (IDH 528244) worth €9.99.
For a purchase value of more than €125 excl. VAT, receive FREE LOCTITE SF 7850 hand cleaner 400 ml (IDH 2098250) worth €13.21.
The free item is automatically added to your order. No registration is required.
The promotion is valid from 01.10.2026 to 31.10.2026.
Loctite Buy & Get deals are recognisable by the promotion label on the product page. Click the label to view all available deals.

Reliable flange sealing with Loctite 574

Practical benefits

Immediate low pressure resistance: You can perform leak testing right after flange assembly because the anaerobic sealant cures quickly without air.
High oil and fluid resistance: You reliably protect engine and gearbox casings against leaks caused by oils, water, and glycol mixtures.
Clean and precise application: The thixotropic formula prevents migration after dispensing, ensuring you achieve a tidy seal without dripping.

In a nutshell

The right choise for

With Loctite 574 Master Gasket flange sealant, you create a reliable seal between close-fitting rigid metal faces and flanges. This anaerobic formula cures in the absence of air and fills gaps up to 0.25 mm. Because it provides resistance to low pressures immediately after assembly, you can leak test gearboxes and engine casings without delay. The thixotropic properties prevent the liquid from running off, ensuring clean and precise application. Highly resistant to oils, water, and glycol mixtures, it prevents fluid leaks and eliminates the need for pre-cut conventional gaskets.

Product information FAQ

€125.20

In stock - tax incl.

Key features according to our expert

Net volume: 250 ml
Relative density: 1,15
ADR packing group: Not applicable
ADR class: Not applicable
Principal hazard property: GHS07 Harmful or irritant
UN number: Not applicable
P-statements: P273; P280; P333 + P313
H-statements: H317; H412
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Packaging: Tube

Product description:

LOCTITE 574 - Gasketing product - Henkel
LOCTITE 574 seals close-fitting joints between rigid metal faces and flanges.
The product cures when confined in the absence of air between close-fitting metal surfaces.
It provides resistance to low pressures immediately after assembly.
Typically used as a form-in-place gasket on rigid flanged connections.
The nature of LOCTITE 574 reduces the migration of liquid product after application to the substrate.
It has a high oil tolerance and excellent water and glycol resistance.

Precautionary statements

P273: Avoid release to the environment.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P333 + P313: If skin irritation or rash occurs: Get medical advice/attention.

Hazard statements

H317: May cause an allergic skin reaction.
H412: Harmful to aquatic life with long lasting effects.

All Features

Net volume: 250 ml
Relative density: 1,15
Adr packing group: Not applicable
Adr class: Not applicable
Principal hazard property: GHS07 Harmful or irritant
Un number: Not applicable
P-statements: P273; P280; P333 + P313
H-statements: H317; H412
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Packaging: Tube

Brand LOCTITE
11010253
EAN 5010266223414
Supplier number LOCTITE 231561

Frequently asked questions about this product

Answered by specialists

What is Loctite 574 used for?: It is used for sealing close-fitting joints between rigid metal faces and flanges, such as gearbox and engine casings.
How does this flange sealant cure?: It cures anaerobically when confined in the absence of air between close-fitting metal surfaces.
What is the maximum gap size Loctite 574 can fill?: It is designed for close-fitting flanged connections with gaps up to 0.25 mm.
Does the seal resist pressure immediately after assembly?: Yes, it provides resistance to low pressures immediately after the flanges are assembled.
Is this product suitable for plastics?: No, this sealant is specifically formulated for rigid metal flanges and is not recommended for plastics.