Vehicle occupant safety hinges on a secure windshield bond. When you need that bond to meet stringent crash safety standards like FMVSS 212, and you need it fast, there’s no room for error. Adhesion failures often stem from inadequate surface preparation or bypassing the tailored activator and primer sequence. Autoshield NP60 ensures the entire bonding system performs, delivering a 1-hour drive-away time compliant with dual airbags.

Why this product exists

Autoshield NP60 was engineered to provide a reliable, rapid solution for direct-glazing windshields and side glass. Its formulation ensures high-strength bonding that meets the critical FMVSS 212 standard, enabling a 1-hour drive-away time even with dual airbags deployed. This preserves vehicle structural integrity and occupant safety, particularly crucial for modern vehicles, including those with aluminium bodies, where high green strength and rapid curing are essential.

While chemically formulated as a 'primer-less' polyurethane, achieving its specified performance relies on a precise system. This means using Autoshield Activator for plain glass surfaces, or Autoshield GB Primer for ceramic band areas. This distinct system ensures the high green strength and rapid FMVSS 212 compliant performance, setting it apart from general-purpose sealants.

The numbers that matter

The most critical metric for Autoshield NP60 is its ability to pass the FMVSS 212 crash test with dual airbags after just 1 hour at 23°C and 50% RH. This means vehicles are safe for return to service quickly, maintaining structural integrity and occupant protection without extended curing waits.

Its shear resistance of over 3 MPa after 5 hours (Ford SAE J 1529) demonstrates high green strength. This rapid development of bond strength is what enables the 1-hour drive-away time. Combined with an elongation at break greater than 700% and a modulus at break of approximately 6 MPa, it delivers a balance of flexibility and structural rigidity, absorbing vehicle dynamic stresses without compromising the bond.

The skin forming time of 20-35 minutes (at 23°C and 50% RH) provides a workable window for positioning and pressing the glass into place. It’s crucial to complete the glass installation and pressing before this skin forms to achieve optimal adhesion and bond integrity.

What it's like to use

Application of Autoshield NP60 follows a mandatory 3-step system to ensure bond integrity and FMVSS 212 compliance:

• Step 1: Surface Activation. For plain glass and lacquer surfaces, clean and activate using Adheseal Autoshield Activator Polyurethane Adhesive with a wipe-on/wipe-off method.
• Step 2: Priming. For ceramic band surfaces, abrade lightly to remove residues, then apply a thin, uniform film of Autoshield GB Primer. Allow 15-60 minutes for the primer to dry completely, depending on temperature.
• Step 3: Sealant Application. Apply Autoshield NP60 in a triangular bead. Immediately push the glass into the vehicle, ensuring it is fully pressed before the sealant begins to skin (within 20-35 minutes at typical temperatures).

For best results, store cartridges at 20°C before use, especially in cold weather, to maintain optimal flow and cure characteristics. Uncured sealant cleans up easily with Cleaner T or acetone. Cured material requires mechanical removal.

Where this product excels

• Windshield bonding: Essential for vehicle models requiring rapid drive-away times and strict adherence to FMVSS 212 crash test standards, particularly in high-volume auto body shops.
• Side glass bonding: Provides a high-strength, non-sag bond for quarter glass, vent windows, and other side glass components, contributing to the vehicle's structural rigidity.
• Aluminium body vehicles: Specifically formulated for excellent adhesion to aluminium substrates, a common requirement in modern vehicle manufacturing.
• Commercial vehicle glass fitting: Its high modulus and structural performance make it suitable for the demanding applications found in trucks and buses, ensuring critical structural integrity.

How it fits in a real system

Autoshield NP60 is the final bonding step in a precise direct-glazing system. It depends on the preceding activation and priming steps to achieve its specified safety and performance criteria. The sequence ensures optimal adhesion to varied glass and body substrates, guaranteeing the fast, high-strength bond needed for immediate vehicle return to service. This integrated system is critical for preventing adhesion failures that compromise crash safety. Each component plays a distinct role in preparing the substrate for the final bond, from cleaning and activating to forming an adhesive linking film.

Choose this when

• When you need to achieve a 1-hour drive-away time with dual airbags, compliant with FMVSS 212 standards.
• When bonding windshields or side glass to aluminium vehicle bodies.
• When a high green strength and rapid curing adhesive is required for quick vehicle turnaround.
• When the application demands a high-modulus, flexible bond that contributes to the structural integrity of the vehicle.

Don't use this when

• Not for: applications in the presence of cured or uncured silicones or hybrid (MS, SPUR, STPE) sealants, as this can severely inhibit adhesion.
• Not for: applications at temperatures lower than 5°C, as curing and bonding performance will be significantly compromised.
• Not for: general construction sealing, for which Adheseal PU25 Fast-Cure Polyurethane Sealant or Adheseal PU50 High-Modulus Polyurethane Adhesive would be a more suitable choice.
• Not for: cleaning old sealant with alcohol-based solutions, which can negatively impact new adhesive adhesion. Use acetone or Cleaner T instead for uncured material.

Related products

• Adheseal PU15 Low-Modulus Polyurethane Sealant