3M Auto Glass Urethane Windshield Adhesive 08693 - Fast, High-Strength

Our review of the 3M Auto Glass Urethane Windshield Adhesive 08693 finds it best suited for professional installers and experienced DIYers who need a rapid, high-strength bond for windshield and stationary glass installation. The bottom line: this medium-viscosity urethane delivers a dependable, non-sag application and OEM-level strength, so it is a sensible choice when speed and a secure seal matter. While curing behavior varies by environment, the adhesive's formulation aims to produce fast results and strong long-term adhesion.

Key Features

• Fast-curing: Produces rapid results in typical service conditions so glass can be handled sooner after installation.
• Medium viscosity: The non-sag consistency allows controlled, clean application to vertical windshield flanges without excessive runout.
• High bond strength: Engineered for windshield bonding and stationary glass attachment to meet demanding strength requirements.
• One-part moisture cure: Simplifies use because the urethane cures with ambient moisture instead of mixing components.
• Pack quantity: Sold as a pack of two 10.5 fl oz cartridges, offering enough material for multiple small jobs or a single full replacement.

Who It's For

This adhesive is targeted at automotive technicians and confident DIY installers replacing windshields or securing stationary glass who need a product that exceeds OEM strength and supports cleaner bead control during application. The medium viscosity works well when a controlled, non-sag bead is important and when a faster return-to-service time is desirable.

It is less suitable for casual users who expect long open times or who require included application nozzles; some customers noted variability in cure speed and the absence of an included nozzle can be inconvenient. For small trim repairs or non-structural sealing where extremely slow cure is acceptable, a different sealant may be preferable.

Pros & Cons

Pros

• Strong adhesion that meets many application strength requirements for windshield bonding.
• Medium viscosity and non-sag formulation make application cleaner and more controlled.
• Fast-curing behavior often reduces wait time before reassembly or road testing.
• Pack of two 10.5 fl oz cartridges provides value for multiple installations.

Cons

• Cure time reports are mixed; some users find it dries very fast while others observe longer curing under certain conditions.
• Nozzle is not included, which may require purchasing or cutting an appropriate tip for bead control.

Specifications

Product type	Windshield urethane adhesive
Brand	3M
Volume per cartridge	10.5 fl oz (310 mL)
Pack quantity	2 cartridges
Viscosity	Medium, non-sag
Cure mechanism	One-part moisture curing urethane
Intended use	Windshield bonding and stationary glass

Our Verdict

The 3M Auto Glass Urethane 08693 is a reliable choice for installers who prioritize a high-strength, controllable bead and quicker handling after installation. It represents good value when OEM-level bond strength and a medium viscosity non-sag formula are required, though users should plan for nozzle sourcing and be mindful of environmental factors that affect cure time.

Frequently Asked Questions

Does this adhesive require mixing?
Answer. No, it is a one-part moisture curing urethane that does not require mixing.

How much material comes in each pack?
Answer. Each cartridge is 10.5 fl oz (310 mL) and the pack contains two cartridges.

Is a dispensing nozzle included?
Answer. Nozzle is not included, so plan to provide an appropriate tip or dispensing gun for bead control.