Which materials is Loctite 431 suitable for?

This cyanoacrylate adhesive bonds metals, plastics, and rubbers. Its medium viscosity also makes it suitable for porous materials like wood, leather, and fabric.

What is the benefit of medium viscosity?

Medium viscosity prevents the adhesive from soaking into porous substrates too quickly and makes application on vertical surfaces easier.

How fast does this instant adhesive set?

Fixture time is reached within 5 to 10 seconds, depending on the substrate and ambient humidity.

How do you bond difficult plastics such as PE or PP?

For difficult-to-bond plastics such as PE or PP, apply a suitable Loctite primer first to ensure strong adhesion.

What is the quantity supplied in this bottle?

This bottle contains 20 g of liquid instant adhesive.

LOCTITE 431 universal instant glue (20g) - 1921879

Name: LOCTITE 431 universal instant glue (20g) - 1921879
Brand: LOCTITE
SKU: 11010319
Price: 26.6 EUR
Availability: InStock

Supplier number: LOCTITE 1921879 | EAN 5010266008219

From 1 piece €26.60

From 12 pieces €25.27 - €15.96 saving

From 24 pieces €24.60 - €47.88 saving

From 36 pieces €23.94 - €95.76 saving

26.60 tax incl.

€21.98 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered as of 03/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

✆ Talk to a specialist

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.

Rapid bonding across multiple materials

Practical benefits

Reliable bond with Loctite: You join plastics, metals, and elastomers securely with uniform stress distribution across the joint.
Controlled medium viscosity: The balanced liquid formula prevents excessive run-off on vertical or porous bonding surfaces.
Fast initial fixture time: You achieve rapid handling strength in seconds without needing complex clamping setups.

In a nutshell

The right choise for

With Loctite 431 universal instant adhesive, you achieve strong and reliable bonds across a wide variety of materials in seconds. This liquid cyanoacrylate adhesive bonds metals, plastics, and elastomers securely while providing uniform stress distribution across the joint. Thanks to its medium viscosity formulation, the adhesive does not run off vertical surfaces and avoids soaking too quickly into porous substrates like wood, leather, or fabric. Within 5 to 10 seconds, you obtain rapid fixture strength without the need for complex clamping setups. The convenient 20 g bottle is ideal for precise assembly work, rapid repairs, and maintenance tasks.

Product information FAQ

€26.60

In stock - tax incl.

Key features according to our expert

Relative density: 1,1
ADR packing group: Not applicable
ADR class: Not applicable
Weight: 20 g
Principal hazard property: GHS07 Harmful or irritant
UN number: Not applicable
P-statements: P261; P280; P305 + P351 + P338; P337 + P313; P501
H-statements: H315; H319; H335
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: 80 - 93 °C
Packaging: Bottle

Product Description:

LOCTITE 431 is a transparent, colorless, medium viscosity, general purpose, ethyl-based instant adhesive. Suitable for metals, rubbers, plastic and also suitable for polyolefins in combination with Primer LOCTITE SF 770 or LOCTITE SF 7239. It has a fixture time of 5 - 10 secs and is well suited to porous and/or acidic surfaces.

Benefits:

Cures very quickly when confined between two surfaces
Ideal for bonding small to medium-size parts
Excellent adhesion to most substrates
Suitable for metals, rubbers, plastics and suited to polyolefins in combination with Primer LOCTITE 770 or LOCTITE 7239
Well suited to porous and/or acidic surfaces
Fixture time of 5 - 10 secs.
Solvent-free
Medium viscosity

Precautionary statements

P261: Avoid breathing dust/fume/gas/mist/vapours/spray.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P337 + P313: If eye irritation persists: Get medical advice/attention.
P501: Dispose of contents/container to ... (see safety data sheet).

Hazard statements

H315: Causes skin irritation.
H319: Causes serious eye irritation.
H335: May cause respiratory irritation.

All Features

Relative density: 1,1
Adr packing group: Not applicable
Adr class: Not applicable
Weight: 20 g
Principal hazard property: GHS07 Harmful or irritant
Un number: Not applicable
P-statements: P261; P280; P305 + P351 + P338; P337 + P313; P501
H-statements: H315; H319; H335
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: 80 - 93 °C
Packaging: Bottle

Brand LOCTITE
11010319
EAN 5010266008219
Supplier number LOCTITE 1921879

Frequently asked questions about this product

Answered by specialists

Which materials is Loctite 431 suitable for?: This cyanoacrylate adhesive bonds metals, plastics, and rubbers. Its medium viscosity also makes it suitable for porous materials like wood, leather, and fabric.
What is the benefit of medium viscosity?: Medium viscosity prevents the adhesive from soaking into porous substrates too quickly and makes application on vertical surfaces easier.
How fast does this instant adhesive set?: Fixture time is reached within 5 to 10 seconds, depending on the substrate and ambient humidity.
How do you bond difficult plastics such as PE or PP?: For difficult-to-bond plastics such as PE or PP, apply a suitable Loctite primer first to ensure strong adhesion.
What is the quantity supplied in this bottle?: This bottle contains 20 g of liquid instant adhesive.