What is Loctite 515 used for?

You use it to seal rigid, machined metal flanges on components such as pumps, gearboxes, and compressors.

How does this sealant cure?

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

What maximum gap size can Loctite 515 fill?

It is suitable for filling gaps and clearances up to 0.25 mm.

Which cartridge gun is required for this cartridge?

The standard 300 ml cartridge fits into any standard manual or pneumatic caulking gun for 300 ml / 310 ml cartridges.

Does it offer immediate pressure resistance after assembly?

Yes, it provides resistance to low pressures immediately after assembling the metal flanges.

LOCTITE 515 industrial surface sealant (300 ml standard tube) - 1241996

Name: LOCTITE 515 industrial surface sealant (300 ml standard tube) - 1241996
Brand: LOCTITE
SKU: 11990272
Price: 194.2 EUR
Availability: PreOrder

Supplier number: LOCTITE 1241996 | EAN 5010266000206

Recommended Retail Price €245.47

194.20 tax incl.

€160.50 excl. VAT (incl. all environmental contributions)

On order: delivered from 12/10/2026

Ordered before 20:00 - delivered as of 12/10/2026
Free shipping
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.

Reliable flange sealing with Loctite 515

Practical benefits

Flexible anaerobic cure: You seal gaps up to 0.25 mm between rigid machined metal flanges, replacing traditional pre-cut gaskets effectively.
Immediate low pressure resistance: You achieve an instant seal against low pressures directly after assembly as the formula cures in the absence of air.
Robust chemical resistance: You ensure long-term integrity across pumps and housings with dependable resistance to common industrial fluids and thermal cycling.

In a nutshell

The right choise for

With the Loctite 515 industrial flange sealant, you create an instant, dependable seal on rigid machined metal flanges. This liquid methacrylate formula cures anaerobically in the absence of air, effortlessly filling surface imperfections and gaps up to 0.25 mm. It eliminates the need for traditional pre-cut gaskets across gearboxes, pumps, and compressors while maintaining proper bolt preload without relaxation. Assembled joints resist low pressures immediately after fitting, allowing you to test and proceed without delay. The standard 300 ml cartridge fits into standard caulking guns for smooth, controlled bead application.

Product information FAQ

€194.20

tax incl.

Key features according to our expert

Net volume: 300 ml
ADR class: Not applicable
UN number: Not applicable
Principal hazard property: GHS07 Harmful or irritant
ADR packing group: Not applicable
P-statements: P101; P102; P261; P273; P302 + P352; P337 + P313; P501
H-statements: H315; H319; H335; H412
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C

Product description:

LOCTITE 515 is a medium strength (6 N/mm² tensile shear strength) industrial gasketing product designed for machined, rigid metal flanges.
Based on methacrylate, it exhibits a medium cure speed.
The product, which cures anaerobicly, is suitable for gaps up to 0.25 mm.
It is used typically as a form-in-place product for pumps, thermostats, compressors, transmission housings and axle covers.

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.
P302 + P352: IF ON SKIN: Wash with plenty of water/…
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.
H412: Harmful to aquatic life with long lasting effects.

All Features

Net volume: 300 ml
Adr class: Not applicable
Un number: Not applicable
Principal hazard property: GHS07 Harmful or irritant
Adr packing group: Not applicable
P-statements: P101; P102; P261; P273; P302 + P352; P337 + P313; P501
H-statements: H315; H319; H335; H412
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C

Brand LOCTITE
11990272
EAN 5010266000206
Supplier number LOCTITE 1241996

Frequently asked questions about this product

Answered by specialists

What is Loctite 515 used for?: You use it to seal rigid, machined metal flanges on components such as pumps, gearboxes, and compressors.
How does this sealant cure?: It cures anaerobically when confined in the absence of air between close-fitting metal surfaces.
What maximum gap size can Loctite 515 fill?: It is suitable for filling gaps and clearances up to 0.25 mm.
Which cartridge gun is required for this cartridge?: The standard 300 ml cartridge fits into any standard manual or pneumatic caulking gun for 300 ml / 310 ml cartridges.
Does it offer immediate pressure resistance after assembly?: Yes, it provides resistance to low pressures immediately after assembling the metal flanges.