What is Loctite 577 used for?

It is a medium-strength liquid thread sealant designed for locking and sealing metal pipes, fittings, and threaded assemblies.

Can this sealant be used on stainless steel and passive metals?

Yes, Loctite 577 cures reliably on both active and passive metals, including stainless steel, brass, and aluminium.

What is the operating temperature range?

The sealant resists continuous operating temperatures ranging from -55 °C to 150 °C.

Can the threaded connection be disassembled later?

Yes, its medium strength allows disassembly using standard hand tools.

What is the benefit of the concertina bottle?

The flexible concertina design allows controlled, precise dispensing without mess or dripping.

LOCTITE 577 thread sealant (50 ml accordion) - 2068186

Name: LOCTITE 577 thread sealant (50 ml accordion) - 2068186
Brand: LOCTITE
SKU: 11010079
Price: 23.8 EUR
Availability: InStock

Supplier number: LOCTITE 2068186 | EAN 5010266011967

23.80 tax incl.

€19.67 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered as of 05/10/2026
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.

Reliable sealing with Loctite 577

Practical benefits

Instant low pressure seal: You achieve immediate leak prevention on metal threaded joints without worrying about product creep, shrinkage, or shredding.
Robust thermal and chemical resistance: You keep pipe connections fully locked against vibration loosening, harsh fluids, and temperatures up to 150 °C.
Clean and precise dispensing: The convenient 50 ml accordion bottle lets you apply the thixotropic formula accurately with zero mess or dripping.

In a nutshell

The right choise for

With the Loctite 577 thread sealant, you lock and seal metal pipe joints, fittings, and threaded assemblies with complete reliability. This medium-strength liquid sealant delivers an instant low-pressure seal that prevents leaks and stops dynamic loads or vibrations from loosening connections, all without shrinking or creeping. Featuring robust chemical resistance and an operating range of -55 °C to 150 °C, it keeps your installations fully protected over time. The handy 50 ML accordion bottle ensures clean, controlled dispensing without dripping. Whenever maintenance is required, you can easily disassemble the connection using standard hand tools.

Product information FAQ

€23.80

In stock - tax incl.

Key features according to our expert

Net volume: 50 ml
Relative density: 1,15
ADR packing group: Not applicable
ADR class: Not applicable
Principal hazard property: GHS07 Harmful or irritant
UN number: Not applicable
P-statements: P101; P102; P273; P280; P333 + P313; P501
H-statements: H317; H412
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Packaging: Bottle

Product description:

Medium-strength, general purpose thread sealant for straight/straight and straight/taper threads and fittings.
Fills the space between threaded parts and seals and locks at the same time.
LOCTITE 577 is designed for the locking and sealing of metal pipes and fittings as well as other threaded assemblies.
The product provides an instant, low-pressure seal for metal pipes and fittings.
It will not creep, shrink or shred.
It has excellent chemical and thermal resistance and offers less migration of liquid product after application.
NEW: Henkel has recently improved the product formulation of LOCTITE 577 providing: Higher strength on contaminated surfaces Improved thermal performance High performance on passive metals without an activator

Precautionary statements

P101: If medical advice is needed, have product container or label at hand.
P102: Keep out of reach of children.
P273: Avoid release to the environment.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P333 + P313: If skin irritation or rash occurs: Get medical advice/attention.
P501: Dispose of contents/container to ... (see safety data sheet).

Hazard statements

H317: May cause an allergic skin reaction.
H412: Harmful to aquatic life with long lasting effects.

All Features

Net volume: 50 ml
Relative density: 1,15
Adr packing group: Not applicable
Adr class: Not applicable
Principal hazard property: GHS07 Harmful or irritant
Un number: Not applicable
P-statements: P101; P102; P273; P280; P333 + P313; P501
H-statements: H317; H412
Hazard class: GHS07 Harmful or irritant
Physical state: Liquid
Flash point: > 100 °C
Packaging: Bottle

Brand LOCTITE
11010079
EAN 5010266011967
Supplier number LOCTITE 2068186

Frequently asked questions about this product

Answered by specialists

What is Loctite 577 used for?: It is a medium-strength liquid thread sealant designed for locking and sealing metal pipes, fittings, and threaded assemblies.
Can this sealant be used on stainless steel and passive metals?: Yes, Loctite 577 cures reliably on both active and passive metals, including stainless steel, brass, and aluminium.
What is the operating temperature range?: The sealant resists continuous operating temperatures ranging from -55 °C to 150 °C.
Can the threaded connection be disassembled later?: Yes, its medium strength allows disassembly using standard hand tools.
What is the benefit of the concertina bottle?: The flexible concertina design allows controlled, precise dispensing without mess or dripping.