What is Loctite SI 5910 suitable for?

This gasket sealant is designed for flexible flanges as well as machined or cast metal and plastic surfaces.

Is this product resistant to engine oil?

Yes, it provides excellent resistance to automotive engine oils, making it ideal for oil pans and timing covers.

What is the maximum gap fill capability?

It fills gaps up to 1 mm and achieves a depth of cure of 2.75 mm within 24 hours.

What is the operating temperature range?

The sealant operates reliably in temperatures ranging from -55 °C to 200 °C.

How do you apply this 300 ml cartridge?

You can dispense it easily and accurately onto clean, degreased surfaces using a standard sealant gun.

LOCTITE 5910 surface sealant black (300 ml tube) - 2061756

Name: LOCTITE 5910 surface sealant black (300 ml tube) - 2061756
Brand: LOCTITE
SKU: 11010266
Price: 50.2 EUR
Availability: InStock

Supplier number: LOCTITE 2061756 | EAN 5010266250724

From 1 piece €50.20

From 12 pieces €47.69 - €30.12 saving

From 24 pieces €46.43 - €90.36 saving

From 36 pieces €45.18 - €180.72 saving

50.20 tax incl.

€41.49 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered tomorrow 02/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
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.

Dependable sealing with Loctite

Practical benefits

High resistance to oils: You achieve a reliable flange seal that easily withstands automotive engine oils and continuous joint movement.
Accurate non-drip application: The thixotropic silicone prevents unwanted migration so you can dispense cleanly right where it is needed.
Effective gap filling performance: You reliably fill joint gaps up to 1 mm on flexible machined or cast metal surfaces.

In a nutshell

The right choise for

With Loctite si 5910 black silicone flange sealant, you create a dependable, long-lasting seal on flexible flanges as well as machined or cast metal and plastic surfaces. Thanks to its thixotropic formulation, the sealant does not run or migrate after dispensing, giving you complete control during application. Its exceptional resistance to automotive engine oils and continuous vibrations makes it ideal for timing covers, oil pans, and transmission housings. Capable of filling gaps up to 1 mm across an operating temperature range of -55 °C to 200 °C, it effortlessly replaces traditional pre-cut gaskets. Dispense the 300 ml cartridge cleanly with a standard sealant gun for professional results.

Product information FAQ

€50.20

In stock - tax incl.

Key features according to our expert

Net volume: 300 ml
Relative density: 1,31
ADR packing group: Not applicable
ADR class: Not applicable
Packaging: Cartridge
Principal hazard property: GHS05 Corrosive
UN number: Not applicable
P-statements: P201; P280; P305 + P351 + P338; P308 + P313; P333 + P313
H-statements: H317; H318; H350; H371
Hazard class: GHS05 Corrosive; GHS07 Harmful or irritant; GHS08 Health hazard
Physical state: Solid
Flash point: > 93 °C
Fire resistant: No

Product description:

LOCTITE SI 5910 is a low strength, silicone-based gasketing product designed for use on flexible flanges with machined or cast surfaces (metal or plastic).
It is suitable for gaps up to 1 mm, and offers a cure-through volume (in 24 hours) of 2.75 mm.
Typical applications include stamped sheet metal covers (timing covers and oil sumps).

Precautionary statements

P201: Obtain special instructions before use.
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.
P308 + P313: IF exposed or concerned: Get medical advice/attention.
P333 + P313: If skin irritation or rash occurs: Get medical advice/attention.

Hazard statements

H317: May cause an allergic skin reaction.
H318: Causes serious eye damage.
H350: May cause cancer.
H371: May cause damage to organs.

All Features

Net volume: 300 ml
Relative density: 1,31
Adr packing group: Not applicable
Adr class: Not applicable
Packaging: Cartridge
Principal hazard property: GHS05 Corrosive
Un number: Not applicable
P-statements: P201; P280; P305 + P351 + P338; P308 + P313; P333 + P313
H-statements: H317; H318; H350; H371
Hazard class: GHS05 Corrosive; GHS07 Harmful or irritant; GHS08 Health hazard
Physical state: Solid
Flash point: > 93 °C
Fire resistant: No

Brand LOCTITE
11010266
EAN 5010266250724
Supplier number LOCTITE 2061756

Frequently asked questions about this product

Answered by specialists

What is Loctite SI 5910 suitable for?: This gasket sealant is designed for flexible flanges as well as machined or cast metal and plastic surfaces.
Is this product resistant to engine oil?: Yes, it provides excellent resistance to automotive engine oils, making it ideal for oil pans and timing covers.
What is the maximum gap fill capability?: It fills gaps up to 1 mm and achieves a depth of cure of 2.75 mm within 24 hours.
What is the operating temperature range?: The sealant operates reliably in temperatures ranging from -55 °C to 200 °C.
How do you apply this 300 ml cartridge?: You can dispense it easily and accurately onto clean, degreased surfaces using a standard sealant gun.