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Self Etch Primer

Adheres to Metal & Painted Surfaces

item(s): 41018


In response to many customer inquiries requesting a quick drying and easy-to-apply coating which enables a restorer to quickly topcoat POR-15 Rust Preventive Coating and other base coats, we have developed POR-15 Self Etch Primer.

With POR-15 Self Etch Primer, you can even topcoat POR-15 Rust Preventive Coating that's been in place for months or years.

POR-15 Self Etch Primer is NOT a high-build primer like POR-15 High Build Primer, but it can be sprayed on almost any painted surface and can be top coated in 20 - 30 minutes. It bonds incredibly well to POR-15 Rust Preventive Coating, and all topcoats bond incredibly well to POR-15 Self Etch Primer. It can be sanded lightly, and if desired, multiple coats may be applied.

In situations where you are topcoating a very old POR-15 Rust Preventive Coating finish, we first recommend a light sanding with any 280 to 320 grit paper.

Replaces Tie Coat Primer


POR-15 Self Etch Primer Technical Data Sheet

POR-15 being stayed over dried and cured POR-15 Rust Preventive

POR-15 Rust Preventive Coating cured before you could top coat? Not a problem, use POR-15 Self Etch Primer over the cured POR-15 Rust Preventive Coating and then top coat it.

WARNING: Cancer - www.P65Warnings.ca.gov.

Customer Reviews

Based on 2 reviews
primer as bonding agent for POR-15

Utilized as part of truck bed liner application on a UTV with rusted bed floor. Stripped/wire brushed floor to bare metal and cleaned/prepped. Used self etch primer on sides (masked 4" up and lightly sanded only) as prior paint still in reasonable shape. 2 coats POR-15 on all then 2 coats bed liner on floor only. POR-15 so far appears very tightly adherent to primer on sides of bed, probably 20-30 mils minimum thick achieved. Bed liner on floor very good result. The self etch primer spray can did "spit" small globs occasionally, can't see any real effect after all said and done, pleased with overall result.

Eric Wheeler
2006 truck frame restore

Very happy with all POR products except one. I used everything…. Cleaner/degreaser, metal prep, the rust preventative, self etch primer, and finally the top coat. Everything worked as described except the top coat. U can take your finger nail and scratch it off. It’s almost like it didn’t adhere to the primer. Outside of that I’m very happy.

Surface Preparation:

For maximum adhesion sand surfaces to be painted with 320 grit sandpaper. All surfaces must be clean and free of all dirt, loose rust, oil, grease, wax, soap, loose paint and any other matter. Clean painted and bare metal surfaces with POR-15 Cleaner Degreaser. Metal surfaces should be treated with POR-15 Metal Prep for maximum adhesion.

Previously Painted Areas:Scuff surface with 320 grit sand paper. Use POR-15 Cleaner Degreaser and POR-15 Metal Prep. Let surface dry thoroughly.

Bare Steel or Aluminum:Clean and prep surface then let dry thoroughly.


Shake can well before spraying. Spray two light coats of POR-15 Self Etch Primer and allow 10 to 15 minutes between coats. POR-15 Self Etch Primer can be topcoated in 30 minutes. It is not necessary to sand POR-15 Self Etch Primer before topcoating.

Dry time:It cures to touch in 30-60 minutes. Second coat can be applied in 10-15 minutes, depending on ambient temperature and humidity.

Cleanup:To prevent clogs in spray nozzle, hold can upside down and spray until clear gas appears.

Empty aerosol cans are recyclable or may be discarded in regular trash pick-up. Do not incinerate or compact.