Octoral PF131 HS Primer Surfacer - Black
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eBayOctoral PF131 + H25 Black HS Primer Surfacer with Medium Hardener 4Litre Kit
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OnBuy.comOctoral Pf131 + H25 Black Hs Primer Surfacer With Medium Hardener 4Litre Kit 3873958055746
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Product Information
Full details
The Octoral PF131 + H25 Black HS Primer Surfacer is designed for professional automotive refinishers and collision repair technicians seeking a high-performance 2K polyurethane foundation. This kit offers superior filling capabilities and exceptional sanding properties, making it ideal for high-quality paint preparation; however, users must strictly adhere to mixing ratios with the included H25 medium hardener to ensure proper curing and substrate adhesion.
All features
| Colour | Black |
|---|---|
| Model Part Number | PF131B-3 |
| Brand | Octoral |
Extended Product Information
FAQs
Can I use this on bare plastic?
No, it is recommended to apply a dedicated plastic adhesion promoter before using this primer on plastic surfaces.
What is the primary difference between high-fill and non-sanding modes?
High-fill mode is for covering heavy imperfections through sanding, while non-sanding (WOW) mode is for speed on flat, clean panels.
Is the H25 hardener interchangeable with other brands?
No, you must use the specified Octoral H25 hardener to guarantee chemical stability and curing performance.
Does this product require a thinner?
Yes, depending on the application technique and ambient temperature, a standard 2K thinner may be used to adjust viscosity.
How long until I can sand the primer?
Drying times vary based on temperature, but it is typically sandable after 3-4 hours at 20°C.
Troubleshooting
Surfacer appears 'stringy' or dries too fast
Check that the correct mixing ratio of H25 hardener is used and ensure the application environment is not exceeding temperature limits.
Surface is difficult to sand
Verify that the cure time was sufficient for your ambient humidity and temperature before beginning the sanding process.
Lack of adhesion to the panel
Ensure the substrate was sanded to the correct grit (320-400) and degreased thoroughly with a silicone remover before application.
Pros and Cons
Pros
- High filling properties reduce labor time on surface prep
- Excellent sanding characteristics
- Dual-functionality for both traditional and wet-on-wet applications
- Robust 2K polyurethane formula ensures long-term stability
Cons
- Requires precise mixing with specific H25 hardener
- Limited to black color base
- Not intended for plastic substrates without proper adhesion promoter
Setup, Compatibility & Care
To achieve optimal performance, mix the PF131 surfacer with the H25 Medium Hardener according to the technical data sheet ratios provided with your kit. Ensure the mixing environment is between 15°C and 25°C for the best flow and hardening results. Use a spray gun with a 1.6mm to 1.8mm nozzle for high-fill applications. Store the containers in a cool, dry place, ensuring lids are sealed tightly after each use to prevent moisture-triggered curing of the components. Always clean your spray equipment with high-quality 2K thinner immediately after application to avoid material hardening inside the gun passages.