LOCTITE 5300 sealing at higher temperatures (310 ml standard tube) - 2558951

Name: LOCTITE 5300 sealing at higher temperatures (310 ml standard tube) - 2558951
Brand: LOCTITE
SKU: 03016892
Price: 40.4 EUR
Availability: PreOrder

Supplier number: LOCTITE 2558951 | EAN 4058093025222

From 1 piece €40.40

From 12 pieces €38.38 - €24.24 saving

From 24 pieces €37.37 - €72.72 saving

From 36 pieces €36.36 - €145.44 saving

40.40 tax incl.

€33.39 excl. VAT (incl. all environmental contributions)

On order: delivered from 09/10/2026

Ordered before 20:00 - delivered as of 09/10/2026
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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High temperature sealing with Loctite

Practical benefits

Superior thermal resistance: You create durable seals and bonds that maintain performance under high heat up to 350 °C.
Clean thixotropic application: The red silicone paste stays firmly in place upon dispensing without sagging or migrating.
Versatile industrial use: You reliably seal and protect components across heating engineering systems, industrial ovens, and household electrical equipment.

In a nutshell

The right choise for

With Loctite si 5300, you create dependable bonds and seals engineered to withstand extreme temperatures up to 350 °C. This red rtv silicone paste cures at room temperature upon contact with atmospheric moisture and features a thixotropic formula that stays firmly in place without sagging or running. This ensures a clean and accurate application across industrial ovens, heating engineering systems, boilers, and heat-exposed machine housings. Once cured, the flexible compound absorbs vibrations and thermal expansion to effectively prevent fluid and gas leaks. The standard 310 ml cartridge fits any conventional manual or pneumatic caulking gun.

Product information FAQ

€40.40

tax incl.

Key features according to our expert

Net volume: 300 ml
Relative density: 1
ADR packing group: Not applicable
ADR class: Not applicable
Packaging: Tube
Principal hazard property: GHS07 Harmful or irritant
UN number: Not applicable
P-statements: P302 + P352; P337 + P313
H-statements: H315; H319
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Fire resistant: No

Product Description:

LOCTITE SI 5300 is generally used for sealing applications, but also for bonding and for high temperature protection.
It is primarily used in industrial bonding/sealing applications, heating engineering, industrial ovens, household electrical and industrial heating equipment.
This product is typically used in applications up to 350 °C.

Precautionary statements

P302 + P352: IF ON SKIN: Wash with plenty of water/…
P337 + P313: If eye irritation persists: Get medical advice/attention.

Hazard statements

H315: Causes skin irritation.
H319: Causes serious eye irritation.

All Features

Net volume: 300 ml
Relative density: 1
Adr packing group: Not applicable
Adr class: Not applicable
Packaging: Tube
Principal hazard property: GHS07 Harmful or irritant
Un number: Not applicable
P-statements: P302 + P352; P337 + P313
H-statements: H315; H319
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Fire resistant: No

Brand LOCTITE
03016892
EAN 4058093025222
Supplier number LOCTITE 2558951

Frequently asked questions about this product

Answered by specialists

What is Loctite SI 5300 used for?: This red RTV silicone is designed for bonding and sealing applications exposed to high temperatures up to 350 °C.
How does this silicone sealant cure?: It is a 1-part formulation that vulcanizes at room temperature (RTV) upon exposure to atmospheric moisture.
What dispensing gun is needed for this product?: The standard 310 ml cartridge fits into any standard manual or pneumatic caulking gun designed for 310 ml cartridges.
Is Loctite SI 5300 fireproof?: No, this sealant withstands temperatures up to 350 °C, but it is not certified or rated as fireproof.