Permatex

Black Super Weatherstrip Adhesive D420

Contact adhesive for rubber seals · US · manufacturer-sourced

Check your container: This countdown is for the Contact adhesive for rubber seals variant. Similar-looking versions may have different times.

How long does Permatex Black Super Weatherstrip Adhesive D420 take to dry?

Short answer

Tack-free: 3–4 minutes after application.
Adhesive & glue

Bond-strength path

Hold, handle and full load come at different times

  1. Join the parts with the Contact adhesive for rubber seals
  2. Hold or clamp for the set time
  3. Put load on the bond only at full strength

This product’s stated stages Quoted at 73°F

  • Tack-free3–4 minutes

Worth noticing: The manufacturer states only one timing here (tack-free, 3–4 minutes); nothing else is inferred.

Common mistake: Releasing the clamps because the glue line feels firm, long before it can carry a load.

Adhesive & glue

Bond-strength path

Assembly, handling and full load are different stages

1 · AssembleClean, fit and apply the Contact adhesive for rubber seals version correctly.
2 · HoldKeep the joint undisturbed through its set or clamp stage.
3 · LoadUse full cure—not surface firmness—before demanding use.

Time bond readiness

When was the bond assembled?
Conditions that affect drying
Where?
Thickness

Stated times

  • Tack-free3–4 minutes

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

Manufacturer website: permatex.com

Conditions & fine print
  • Stated conditions: 73°F (23°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.
  • Tack-free: The source gives no conditions for this time.
  • 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 Report outdated information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
Permatex Black Super Weatherstrip Adhesive D420
Variant
Contact adhesive for rubber seals
Region
US
Listed use
door seals, weatherstripping
Timed stages recorded
tack free
Source checked
2026-10-25

Documentation: Technical data sheet copy · Sheet Rev 11/06

Condition attached to the stated time: The source gives no conditions for this time.

About this product

A contact adhesive with a short wait: tack-free in 3 to 4 minutes before the seal is pressed on.

Using this specific product

Permatex Black Super Weatherstrip Adhesive D420 is listed here as the Contact adhesive for rubber seals version for door seals and weatherstripping. For bonding parts, 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 Contact adhesive for rubber seals; related versions can use different timing.
  • For door seals and weatherstripping, pay particular attention to surface fit, cleanliness, clamping pressure and bond-line thickness.
  • The source gives no conditions for this time.

How to check readiness

Test a noncritical offcut or wait for the stated load milestone before stressing the joint. The sheet gives a tack-free time of 3 to 4 minutes.

Avoid this mistake

Handling strength and full load strength are different milestones.

Compare with similar products

Keep going

Questions

How long does this product take to dry?

Permatex states: The sheet gives a tack-free time of 3 to 4 minutes. Conditions: The source gives no conditions for this time.. These are the manufacturer’s stated times, not a guarantee.

How long before pressing the weatherstrip into place?

Wait for tack-free, which the sheet gives as 3 to 4 minutes.

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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