Octoral PF131 HS Surfacer - White
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eBayOctoral PF131 HS Primer Surfacer High Build 3Litre White 2K Polyurethane Filling
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OnBuy.comOctoral Pf131 Hs Primer Surfacer High Build 3Litre 2K Polyurethane Filling White 3873864342749
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Product Information
Full details
The Octoral PF131 HS Surfacer in White is designed for professional automotive refinishers and technicians who require a high-filling, versatile surfacer that balances sanding ease with structural durability. This 2K polyurethane product is an excellent choice for achieving a smooth, high-quality base for topcoats on various substrates, though it requires precise mixing ratios based on the hardener selected to ensure optimal curing performance.
All features
| Colour | White |
|---|---|
| Model Part Number | PF131 HS Surfacer |
| Brand | Octoral |
Extended Product Information
FAQs
Can PF131 be used as a non-sanding surfacer?
Yes, this product is specifically formulated to be versatile enough to function as a non-sanding surfacer depending on the application method.
What substrates is this surfacer compatible with?
It is suitable for bare steel, aluminum, GRP, polyester fillers, OEM primer, and old paint systems that are in good condition.
Does this product require a specific thinner?
The product is designed to be used with Octoral Uni Thinner, with specific maximum percentages allowed based on the hardener ratio used.
What is the recommended mixing ratio for HS Hardener?
When using HS Hardener, the mixing ratio is 4:1 with a maximum of 15% Uni Thinner.
Why is the surface white?
The white color serves as a high-opacity foundation that helps in achieving consistent color results for light-colored topcoats.
Troubleshooting
Poor adhesion to the substrate
Ensure the surface was sanded sufficiently and properly degreased before application.
Surfacer is difficult to sand
Check that the correct mixing ratio was used and ensure the product has achieved full cure time before sanding.
Rough finish upon application
Verify the spray viscosity and ensure the correct amount of Uni Thinner was added according to the ratio used.
Pros and Cons
Pros
- Superior filling properties for surface leveling
- Easy to sand once fully cured
- Highly versatile with multiple mixing ratio options
- Strong adhesion to a wide range of automotive substrates
- Can be used as both sanding and non-sanding surfacer
Cons
- Requires precise mixing ratios for specific hardeners
- May require additional thinning based on the ratio used
- Not intended for application over inadequately prepared surfaces
Setup, Compatibility & Care
Before application, ensure all surfaces are thoroughly sanded, scuffed, and degreased to remove any contaminants. The product is compatible with bare steel, aluminum, GRP, and polyester fillers.
Mixing Guide
| Hardener Type | Mixing Ratio | Thinner Limit |
| :--- | :--- | :--- |
| 2K/MS Hardener | 3:1 | Max 10% |
| HS Hardener | 4:1 | Max 15% |
| HS420 Hardener | 6:1 | Max 25% |
After mixing, ensure the equipment is thoroughly cleaned immediately following use, as 2K polyurethane products can cure rapidly inside spray guns, leading to clogs and damage.