What is Loctite SI 5710 used for?

This ultra-clear 2-part silicone is designed for potting, encapsulating, and sealing optical and electronic components like LED channels, lenses, and sensors.

How does this silicone adhesive cure?

The 2-part silicone cures at room temperature via polyaddition. The curing process can also be accelerated with heat.

Is this product fire-resistant?

No, this product is not fire-resistant. Its flash point is above 93 °C.

Will this silicone corrode sensitive electronics?

No, thanks to polyaddition technology, it releases no by-products during curing and is non-corrosive.

How do you dispense this dual cartridge?

Insert the 400 ml dual cartridge into a suitable 2-part dispenser gun and attach a static mixing nozzle to mix both components thoroughly.

LOCTITE 5700 2K silicone liquid adhesive/sealer ultra clear (400 ml twin duo tube) - 2571794

Name: LOCTITE 5700 2K silicone liquid adhesive/sealer ultra clear (400 ml twin duo tube) - 2571794
Brand: LOCTITE
SKU: 02621685
Price: 155.6 EUR
Availability: PreOrder

Supplier number: LOCTITE 2571794 | EAN 5010266006345

Recommended Retail Price €196.79

155.60 tax incl.

€128.60 excl. VAT (incl. all environmental contributions)

On order: delivered from 26/10/2026

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.

Invisible potting with Loctite SI 5710

Practical benefits

High optical transparency: You maintain maximum light transmission across optical sensors and lenses thanks to the ultra-clear formulation.
Non-corrosive stable curing: The polyaddition chemistry releases no by-products and ensures low shrinkage for dependable, durable potting.
Flexible curing control: You can cure the silicone at room temperature or apply heat to accelerate your assembly workflow.

In a nutshell

The right choise for

Protect delicate optical and electronic components reliably with Loctite si 5710 2K liquid silicone adhesive and sealant. Featuring an ultra-clear formulation, it delivers maximum light transmission, making it the ideal solution for potting, encapsulating, and sealing led channels, lenses, and optical sensors. Thanks to advanced polyaddition technology, the liquid silicone cures with low shrinkage and releases no corrosive by-products, safeguarding sensitive electronics from internal stresses and corrosion. Supplied in a practical 400 ml dual cartridge, it applies easily and cures at room temperature or with heat acceleration to match your production workflow.

Product information FAQ

€155.60

tax incl.

Key features according to our expert

Net volume: 400 ml
ADR packing group: Not applicable
Fire-resistant: No
UN number: Not applicable
ADR class: Not applicable
EUH-statements: EUH441
P-statements: P201; P273
Physical state: Liquid
Flash point: > 93 °C

Product description:

LOCTITE SI 5700 is an ultra clear, two-part silicone which cures at room temperature and can be accelerated by heat.
Thanks to polyaddition technology, the product releases no by-products, has low shrinkage, is non-corrosive and health and safety friendly.
LOCTITE SI 5700 provides high transparency with a high transmission rate and is used for potting applications in the Lighting, Electrical and Optical industries for LED channel or lenses, optical sensors or coating
processes.

Precautionary statements

P201: Obtain special instructions before use.
P273: Avoid release to the environment.

All Features

Net volume: 400 ml
Adr packing group: Not applicable
Fire-resistant: No
Un number: Not applicable
Adr class: Not applicable
Euh-statements: EUH441
P-statements: P201; P273
Physical state: Liquid
Flash point: > 93 °C

Brand LOCTITE
02621685
EAN 5010266006345
Supplier number LOCTITE 2571794

Frequently asked questions about this product

Answered by specialists

What is Loctite SI 5710 used for?: This ultra-clear 2-part silicone is designed for potting, encapsulating, and sealing optical and electronic components like LED channels, lenses, and sensors.
How does this silicone adhesive cure?: The 2-part silicone cures at room temperature via polyaddition. The curing process can also be accelerated with heat.
Is this product fire-resistant?: No, this product is not fire-resistant. Its flash point is above 93 °C.
Will this silicone corrode sensitive electronics?: No, thanks to polyaddition technology, it releases no by-products during curing and is non-corrosive.
How do you dispense this dual cartridge?: Insert the 400 ml dual cartridge into a suitable 2-part dispenser gun and attach a static mixing nozzle to mix both components thoroughly.