Loctite (Henkel)

High Flex Gasket Maker

Anaerobic flexible gasket maker · US · manufacturer-sourced

Check your container: This countdown is for the Anaerobic flexible gasket maker variant. Similar-looking versions may have different times.

How long does Loctite (Henkel) High Flex Gasket Maker take to dry?

Short answer

Set / hardened: 15–20 minutes after application.
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Gasket-sealing stages

Assemble, wait, then fill and pressurize

  1. Apply the Anaerobic flexible gasket maker to clean, dry flanges
  2. Assemble within the stated time
  3. Fill and run only after the stated cure

This product’s stated stages Quoted at 22°F

  • Set15–20 minutes

Worth noticing: The manufacturer states only one timing here (set, 15–20 minutes); nothing else is inferred.

Common mistake: Adding fluid or pressure before the gasket has cured; leaks follow.

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Bond-strength path

Assembly, handling and full load are different stages

1 · AssembleClean, fit and apply the Anaerobic flexible gasket maker version correctly.
2 · HoldKeep the joint undisturbed through its set or clamp stage.
3 · LoadUse full cure—not surface firmness—before demanding use.

Time the gasket cure

When did you assemble the joint?
Conditions that affect drying
Where?
Thickness

Stated times

  • Set / hardened15–20 minutes

From Loctite (Henkel) data sheet · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.

Manufacturer website: loctiteproducts.com

Conditions & fine print
  • Stated conditions: 22°F (-6°C)
  • Times depend on temperature, humidity, film or bead thickness and airflow. Follow the current data sheet and label.
  • Region US. Formulas can differ between countries; check your container.
  • Set / hardened: Fixture time is the time to reach 0.1 N/mm² shear strength.
  • Entered from the cited manufacturer documentation. Check the current label for the exact formula and region. Report outdated information
  • Actual results depend on preparation, thickness, ventilation, temperature, humidity, mixing and substrate.

Confirm this is your product

Closely named formulas, colors and regional versions can use different times. Match these details to your container before starting a countdown.

Exact listing
Loctite (Henkel) High Flex Gasket Maker
Variant
Anaerobic flexible gasket maker
Region
US
Listed use
flange sealing
Timed stages recorded
set
Source checked
2026-10-25

Documentation: Technical data sheet · Data sheet October 2019

Condition attached to the stated time: Fixture time is the time to reach 0.1 N/mm² shear strength.

About this product

An anaerobic gasket maker, which cures out of the air between two metal flanges rather than from moisture. The sheet says it is not a UV-curable product, gives 15 to 20 minutes to fixture on passivated aluminum, and measures properties after 24 hours.

Using this specific product

Loctite (Henkel) High Flex Gasket Maker is listed here as the Anaerobic flexible gasket maker version for flange sealing. For using this product, the useful question is not simply whether the surface looks finished—it is whether the exact next-action milestone shown above has been reached.

Before you start

  • Confirm the package says Anaerobic flexible gasket maker; related versions can use different timing.
  • For flange sealing, pay particular attention to the exact variant, preparation and environmental conditions.
  • Fixture time is the time to reach 0.1 N/mm² shear strength.

How to check readiness

Check the real material or treated area at the slowest location before the next step. The data sheet gives a fixture time of 15 to 20 minutes on passivated aluminum with no gap.

Avoid this mistake

The first visible change is not always the manufacturer’s final-use milestone.

Keep going

Questions

How long does this product take to dry?

Loctite (Henkel) states: The data sheet gives a fixture time of 15 to 20 minutes on passivated aluminum with no gap. Conditions: Fixture time is the time to reach 0.1 N/mm² shear strength.. These are the manufacturer’s stated times, not a guarantee.

Does LOCTITE High Flex Gasket Maker need air to cure?

No. The sheet lists it as anaerobic, so it cures between closely fitted metal surfaces, and says it is not a UV-curable product.

What affects how long this product takes to dry or cure?

Times depend on temperature, humidity, film or bead thickness and airflow. Follow the current data sheet and label. Follow the product label for your conditions.

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