Item # 23083Z BRAND: POR-15

POR15 POR Patch White Seam Sealer

Patch Filler and Seam Sealer
Patch Filler and Seam Sealer
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Out Of Stock. Due back February 1
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Patch Filler and Seam Sealer
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POR15 POR Patch White Seam Sealer


The ultimate filler adhesive. Apply right over rust or bare metal.

  • Permanently seal seams
  • Repair loose furniture joints
  • Patch holes in steel, wood or some plastics
  • Fix holes in fuel tanks
  • Bond steel to some plastics, wood or concrete
  • Repair concrete and cinder blocks

Fix that seam or channel with POR-15 Patch. For years our customers have asked us for a thicker version of our world famous POR-15 Rust Preventive Coating, to use for filling seams or holes. Here it is! POR-15 Patch is quite literally POR-15 Rust Preventive Coating in a tube, and it dries as hard as a rock, remains flexible, and once dry is totally impervious to fuels and solvents. It’s so tough it may actually add strength to weakened metal, and it won’t absorb moisture and swell like conventional body fillers. Try it yourself, it’s incredible! Patches holes or cracks in steel, wood, and some plastics.


Waterproof. Apply Over Rust. Non-Flammable and Low VOC. For Steel, Wood, Plastic, Seams, Exansion Joints


Ships Via FedEx


Please read all provided instructions prior to use.

Safety Information

Always wear proper personal safety equipment when using this product. Always use in a well ventilated area.

Customer Reviews

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Questions & Answers

Can this be applied over rust converter?

Asked by: Zio1982
You will want to clean the area with acetone or PRE first to remove any leftover converter.
Answered by: ZachC
Date published: 2021-01-19

Can this be painted over? I want to use it as a high build application inside the outer drip rails. Thanks.

Asked by: Rick68
POR 15 states "POR-15® Patch dries to a rock-hard finish and sanding is very difficult, so we don’t recommend use on car exterior parts if a cosmetic finish is desired."
Answered by: Kelly H
Date published: 2020-06-28

What is the temperature rating of this seam sealer? I a m powder coating a few of my trucks body panels and I am finding that the Factory seam sealer that is on my truck does not like the 400ish degrees that the powder coat needs to cure.

Asked by: Mike
This seam sealer is not designed to be used in powder coating applications.
Answered by: Scott C
Date published: 2020-05-27

No mention of use on Aluminum gas tanks.Can it be used to seal pitted welds on sea going aluminum tanks of 100 gallons? Thank you. I 

Asked by: Cpt 1
Yes, this can be used on aluminum surfaces without any issues.
Answered by: Kelly H
Date published: 2020-04-02

Can this be painted? And if so, what paint is recommended?

Asked by: JOHN
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POR15 POR Patch White Seam Sealer
Out Of Stock. Due back February 1