BOSSDE P-161 1K Grey Automotive Primer Fast Dry Easy Sanding for Polyester Putty and Sanded Old Paint Spot Repair
MOQ:
50
Delivery Time:
7-14 working days
Brand:
BOSSDE
Product Description
BOSSDE P-161 1K Grey Primer for Automotive Spot Repair
Refine the prepared surface before the colour coat goes on.
A preparation layer for minor surface defects
BOSSDE P-161 is a single-component grey primer for professional refinishing. It is designed to fill fine imperfections in the coating surface and promote adhesion between coating layers. The substrates identified in the product information are unsaturated polyester putty and sanded existing paintwork.
Its formulation contains nitrocellulose, specially modified resins, pigments, fillers, additives and organic solvents. The source describes strong filling performance, fast drying and a fine film that is easy to sand. Use it to refine a properly repaired surface before the approved subsequent coating stages.
P-161 is not presented here as a repair material for deep damage or as a primer approved for every bare substrate. Establish the substrate and coating sequence before selecting it.
Check Your Repair System & Request Pricing
Why it belongs between repair and finishing
Address the small defects that remain after preparation
Even after the main repair has been completed, fine surface imperfections can affect the next coating stage. P-161 is intended for this finishing-preparation task, over the stated substrates. Its filling description should not be interpreted as permission to bury deep scratches or apply an unverified heavy film.
Make sanding part of a controlled process
The fine, easy-sanding film is a stated product characteristic. Allow it to reach the specified sanding condition, then prepare the surface under the current technical instructions. No verified minute value or abrasive grade was available in the extracted information.
Support the next coating layer
The supplier describes good intercoat adhesion with primer and topcoat systems. Confirm the exact pairing, preparation and overcoating window before incorporating P-161 into an existing workshop process.
What makes up the product?
| Formulation element listed | Place in the product |
| Nitrocellulose and specially modified resins | Identified binder ingredients |
| Pigments and fillers | Ingredients in the grey filling-primer formulation |
| Additives and organic solvents | Additional components identified by the supplier |
| Specified thinner, added for application | Used at the stated primer-to-thinner ratio |
P-161 is a 1K primer. Its listed mixing instruction specifies primer and thinner; no hardener addition is listed. Do not adapt a 2K primer's activation procedure to this product.
Key features at a glance
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Fine-defect filling: intended to improve the prepared coating surface before finishing.
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Fast-drying description: aimed at refinish preparation; actual sanding and recoating times must come from the current TDS.
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Easy sanding: the source describes a fine film suited to the sanding stage.
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Defined substrate scope: unsaturated polyester putty and sanded old paintwork are specifically identified.
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Two listed pack sizes: 3.75 L and 20 L, with packing details to be confirmed for the selected size.
Where a technician would consider P-161
These examples are representative repair situations, not documented customer case studies.
A local body repair after polyester putty shaping. Complete the damage repair and required putty preparation first. P-161 can then be evaluated for the fine-defect filling stage under an approved coating sequence.
A small panel repair within existing paintwork. Check that the old coating is suitable for refinishing and prepare it correctly. The source specifies sanded old paint as a substrate; it does not approve application over loose, contaminated or unidentified failing coatings.
Preparation for a colour change over retained paint. Assess the existing coating and confirm compatibility with the planned system. Use P-161 for its stated surface-refinement role where that process calls for it.
Fit the primer to the workshop's jobs
| Operation | Useful role | Check before use |
| Spot-repair shop | Fine surface preparation on qualifying repair areas | Substrate and repair boundaries |
| Collision repair centre | A defined step after polyester putty preparation | Repair completeness and required coating system |
| Vehicle refinishing business | Preparation of suitable sanded existing paint | Condition of the retained film and compatibility |
The source does not quantify time savings or reductions in rework. A documented application trial is the basis for estimating those outcomes in a particular shop.
Choose the material for the defect
| Material or process | Selection question |
| Polyester putty repair | Does the surface still need the approved repair or shaping step before primer? |
| P-161 1K grey primer | Is the job fine-defect filling over prepared polyester putty or sanded old paint? |
| A specified 2K primer surfacer | Does the repair specification call for this particular two-component system? Follow its own data. |
| A specified epoxy primer | Does the substrate or protection requirement call for that exact primer system? Verify its approval. |
These are selection prompts, not evidence that the materials are interchangeable. Do not assume P-161 replaces a required corrosion-protection or bare-substrate primer.
How to mix and apply P-161
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Confirm the substrate and repair stage. Check whether the surface is prepared unsaturated polyester putty or suitable sanded old paint. Complete any necessary damage repair first.
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Obtain the current instructions. Confirm the thinner model, the ratio's measuring basis, surface preparation and the complete coating sequence.
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Prepare the material. Follow the technical instructions for homogenising the primer before measuring it.
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Measure the stated ratio. The source specifies P-161 primer : thinner = 100 : 80–100. Confirm whether the figures are by volume or weight before using them. Do not interpret this as 80–100% thinner in the final mixture.
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Set up and spray to specification. Use the approved application viscosity, nozzle, pressure, number of passes and film thickness. These numerical values were not available in the extracted text.
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Dry, inspect and sand as directed. Follow the current drying conditions and abrasive recommendation. Do not proceed solely because the surface looks dry.
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Apply the approved next coating. Check compatibility, cleanliness and overcoating instructions before finishing.
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Close and clean promptly. Reseal the container after use. The source warns of surface skinning if it is left open and instructs users to clean coating tools with thinner immediately after use.
For professional use. Follow the SDS and the specified application controls for the primer and thinner.
Technical specifications
| Parameter | Available product information |
| Brand | BOSSDE |
| Model | P-161 |
| Product | 1K grey primer |
| Component system | Single-component |
| Colour | Grey |
| Listed composition | Nitrocellulose, specially modified resins, pigments, fillers, additives, organic solvents |
| Intended function | Fine surface-defect filling and promotion of intercoat adhesion |
| Identified substrates | Unsaturated polyester putty; sanded old paintwork |
| Primer : thinner | 100 : 80–100; measuring basis to be confirmed |
| Hardener | No hardener addition listed in the mixing instruction |
| Drying and sanding | Fast-drying, easy-sanding description; times and conditions per current TDS |
| Pack sizes | 3.75 L / 20 L |
| Stated storage life | 24 months at 20°C in the original sealed container |
| HS code | 3208201090 |
| Application viscosity, nozzle, pressure, passes, dry film thickness | Current TDS required; values not extracted |
| Density, VOC, flash point and coverage | Not verified in the available information |
Supplier declaration: the source states that the product contains no heavy metals and complies with EU RoHS requirements. No supporting report was provided in the extracted material. Request the applicable declaration and test evidence before relying on this statement for a purchasing or compliance requirement.
Packaging and storage
P-161 is listed in 3.75 L and 20 L formats. The source also gives 4 cans per carton and carton dimensions of 34.5 × 34.5 × 20.7 cm. Confirm which pack size this carton specification applies to; do not apply it to both formats without confirmation.
Request the net and gross weights, packaging material and any pallet information with the quotation. The stated shelf life is 24 months at 20°C in the original sealed container; this is not an opened-container shelf-life claim.
Keep containers tightly closed in a cool location, protected from water, leakage, sunlight and high temperatures, and away from ignition sources, as stated in the product information. Follow the current SDS for the full handling and storage requirements.
Related materials for the repair process
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Approved P-161 thinner: obtain the exact model and selection guidance; no model was verified in the extracted text.
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Unsaturated polyester putty: the named substrate category, prepared according to its own instructions.
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Compatible subsequent primer or topcoat: confirm the exact product and coating sequence.
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Sanding and application materials: select abrasives and equipment against the approved process.
These are system-selection categories, not a verified package of named companion products.
Workshop FAQ
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What surfaces are specified for P-161?The source identifies unsaturated polyester putty and sanded old paintwork. Other substrates need specific approval.
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Is P-161 a plastic adhesion primer?That use is not established here. Its identified substrates differ from those of a dedicated plastic adhesion primer; do not assume approval for bare PP or ABS.
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What is the mixing ratio?The stated ratio is 100 parts P-161 to 80–100 parts thinner. Confirm the measuring basis and approved thinner before mixing.
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Do I add a hardener?P-161 is listed as a 1K product, and its mixing instruction lists primer and thinner only. Do not introduce a hardener unless the manufacturer provides an explicit revised instruction.
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Can it repair deep surface damage?Its stated purpose is filling fine defects in the coating surface. Complete the appropriate damage-repair and shaping process before using it.
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How long should I wait before sanding?Use the current TDS and actual application conditions. The extracted source did not provide a verified sanding time.
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Can it be sprayed directly onto bare steel?Bare steel is not among the verified substrates. Obtain an approved substrate and corrosion-protection sequence rather than assuming direct-to-metal suitability.
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Does the 24-month shelf life apply after opening?The statement applies to the original sealed container at 20°C. Reseal opened containers promptly and request guidance for remaining material.
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Company
Guangzhou Gate Materials Co., Ltd.
Location
Room 1503, Building 4, Yiyun Science and Innovation Park, No. 13, Jinshi Third Road, Dayuan Subdistrict, Baiyun District, Guangzhou, Guangdong, China
Contact Person
Natalia Zhu