Octoral HS Primer Surfacer - Grey - 4000ml
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eBayOctoral PF131 + H24 Grey HS Primer Surfacer with Fast Hardener 4Litre Kit
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OnBuy.comOctoral Pf131 + H24 Hs Primer Surfacer With Fast Hardener 4Litre Kit Grey 3873922547949
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Product Information
Full details
The Octoral HS Primer Surfacer is designed for professional automotive refinishers and serious DIY enthusiasts who require a reliable foundation for high-quality paint jobs. Its primary benefit is its high filling capacity combined with exceptional sanding properties, allowing for a perfectly smooth substrate before topcoat application. However, users should note that as a 2K polyurethane system, it requires precise mixing ratios with the H24 hardener and must be used in a well-ventilated environment with appropriate personal protective equipment.
All features
| Colour | Grey |
|---|---|
| Model Part Number | PF131G-3 |
| Brand | Octoral |
| Container Volume | 4000ml |
Extended Product Information
FAQs
Do I need a separate hardener?
Yes, this is a 2K system and requires the H24 hardener to initiate the curing process.
Can I use this over bare metal?
It is recommended to apply an etch primer or epoxy primer to bare metal first for maximum corrosion protection before applying the surfacer.
How long is the pot life?
Once mixed with the hardener, the product has a limited pot life; refer to the technical data sheet for exact times based on current temperature.
What is the primary color of this surfacer?
This product is a neutral grey, which helps in identifying surface imperfections during the sanding process.
Is this suitable for spot repairs?
Yes, the high-filling nature makes it excellent for spot repairs, but ensure proper feather-edging of the surrounding paint.
Troubleshooting
Surface remains tacky or soft after recommended dry time
Check mixing ratio to ensure correct amount of H24 hardener was added and verify ambient temperature is within the recommended range.
Excessive orange peel or texture upon application
Adjust spray gun pressure, increase the amount of thinner if allowed by the technical sheet, or check the spray gun nozzle size.
Primer is clogging sandpaper too quickly
Ensure the primer has fully cured for the recommended duration; humidity can sometimes extend the curing cycle.
Pros and Cons
Pros
- High build quality reduces the need for multiple coats
- Easy to sand, saving significant time during preparation
- Provides a stable, smooth base for professional-grade paint adhesion
- Compatible with a wide range of automotive topcoats
- Excellent durability and resistance to shrinkage
Cons
- Requires professional spray equipment for best results
- Requires careful mixing with H24 hardener
- Strict ventilation and safety gear are mandatory
- Limited pot life once mixed
Setup, Compatibility & Care
To prepare the product, follow the manufacturer's technical data sheet for the exact mixing ratio of the PF131 surfacer to the H24 hardener. Always use a calibrated mixing cup to ensure accuracy. Use a paint gun with a 1.6mm to 1.8mm nozzle for optimal atomization. After use, equipment must be cleaned immediately with a high-quality solvent to prevent the polyurethane from curing inside the spray gun components. Store the unmixed product in a cool, dry place away from direct sunlight, and ensure the lid is sealed tightly to prevent atmospheric moisture from compromising the hardener component.