What is Loctite 603 used for?

It is used for bonding cylindrical metal parts such as bearings, bushings, and shafts with tight clearances.

Do parts need to be completely degreased before application?

No, this oil-tolerant formula cures reliably even on lightly oiled metal surfaces.

What is the maximum diametral clearance it can fill?

Due to its low viscosity, Loctite 603 is suitable for gaps up to 0.1 mm.

How fast does this retaining compound cure?

It reaches fixture strength on steel in 10 minutes, with full cure achieved within 24 hours.

How do you disassemble parts bonded with Loctite 603?

As this is a high-strength compound, apply localized heat up to 250 °C to disassemble the joint.

LOCTITE 603 adhesive for cylindrical mounting (250 ml bottle) - 142443

Name: LOCTITE 603 adhesive for cylindrical mounting (250 ml bottle) - 142443
Brand: LOCTITE
SKU: 11010254
Price: 213.6 EUR
Availability: InStock

Supplier number: LOCTITE 142443 | EAN 5010266168975

Recommended Retail Price €270.01

213.60 tax incl.

€176.53 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

Delivery by DHL

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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.

Secure cylindrical assemblies with Loctite 603

Practical benefits

High strength cylindrical retention: You achieve a permanent bond on close-fitting bearings, bushings, and shafts.
Tolerant to light oils: You obtain dependable curing even when metal parts have slight residual surface oil.
Resistant to severe vibration: You eliminate unwanted loosening and dynamic wear caused by heavy mechanical shock loads.

In a nutshell

The right choise for

With Loctite 603 retaining compound for cylindrical joints, you create high-strength, dependable assemblies on bearings, bushings, and shafts with tight clearances up to 0.1 mm. Its oil-tolerant formula ensures effective curing even on parts that are not completely degreased or have light surface oil. By distributing the mechanical load evenly across the entire contact surface, you prevent play, fretting corrosion, and loosening caused by severe vibrations and shock loads. The liquid compound reaches fixture strength on steel in just 10 minutes and achieves full cure in 24 hours. This 250 ml bottle provides reliable performance for maintenance, machining, and industrial repairs.

Product information FAQ

€213.60

In stock - tax incl.

Key features according to our expert

Net volume: 250 ml
Relative density: 1,07
ADR packing group: Not applicable
ADR class: Not applicable
Principal hazard property: GHS05 Corrosive
UN number: Not applicable
P-statements: P101; P102; P261; P273; P280; P302 + P352; P305 + P351 + P338; P333 + P313; P501
H-statements: H315; H317; H318; H335; H412
Hazard class: GHS05 Corrosive; GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Packaging: Bottle

Product description:

Retaining Compound - high strength.
Ideal for bearings.
For use on close-fitting cylindrical parts.
High oil tolerance.
LOCTITE 603 is a high-strength retaining compound.
Designed for the bonding of cylindrical fitting parts, especially for sintered bearings and also where consistently clean surfaces cannot be assured.
The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration.
It has a high oil tolerance.

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.
P273: Avoid release to the environment.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P302 + P352: IF ON SKIN: Wash with plenty of water/…
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P333 + P313: If skin irritation or rash occurs: Get medical advice/attention.
P501: Dispose of contents/container to ... (see safety data sheet).

Hazard statements

H315: Causes skin irritation.
H317: May cause an allergic skin reaction.
H318: Causes serious eye damage.
H335: May cause respiratory irritation.
H412: Harmful to aquatic life with long lasting effects.

All Features

Net volume: 250 ml
Relative density: 1,07
Adr packing group: Not applicable
Adr class: Not applicable
Principal hazard property: GHS05 Corrosive
Un number: Not applicable
P-statements: P101; P102; P261; P273; P280; P302 + P352; P305 + P351 + P338; P333 + P313; P501
H-statements: H315; H317; H318; H335; H412
Hazard class: GHS05 Corrosive; GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Packaging: Bottle

Brand LOCTITE
11010254
EAN 5010266168975
Supplier number LOCTITE 142443

Frequently asked questions about this product

Answered by specialists

What is Loctite 603 used for?: It is used for bonding cylindrical metal parts such as bearings, bushings, and shafts with tight clearances.
Do parts need to be completely degreased before application?: No, this oil-tolerant formula cures reliably even on lightly oiled metal surfaces.
What is the maximum diametral clearance it can fill?: Due to its low viscosity, Loctite 603 is suitable for gaps up to 0.1 mm.
How fast does this retaining compound cure?: It reaches fixture strength on steel in 10 minutes, with full cure achieved within 24 hours.
How do you disassemble parts bonded with Loctite 603?: As this is a high-strength compound, apply localized heat up to 250 °C to disassemble the joint.