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Pro-Seal Fuel Tank Sealant P/S 890 B2

29 Reviews 17 Answered Questions

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6 oz. Cartridge / 3.5 Fl Oz Kit

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Overview

P/S 890 Class B is an aircraft integral fuel tank sealant. It has a service temperature range from - 65°F (-54°C) to 250°F (121°C), with intermittent excursions up to 275°F (135°C). This material is designed for fillet sealing of fuel tanks and other aircraft fuselage sealing applications. The cured sealant maintains excellent elastomeric properties after prolonged exposure to both jet fuel and aviation gas.

P/S 890 Class B is a two-part, manganese dioxide cured polysulfide compound. The uncured material is a low sag, thixotropic paste suitable for application by extrusion gun or spatula. It cures at room temperature to form a resilient sealant having excellent adhesion to common aircraft substrates.

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Great!!!!!

Regional A

Verified Purchase

PRO SEAL FUEL TANK SEALANT PS 890 B2 PINT

December 13, 2023

Exccellent

Jean R

Verified Purchase

PRO SEAL FUEL TANK SEALANT PS 890 B2 PINT

May 24, 2023

This is a sticky subject but I give it 5 stars.

John H

Verified Purchase

PROSEAL 0890B002 SEALING COMPOUND 6OZ CARTRIDGE / 3.5 FL OZ MATERIAL KIT

April 21, 2023

fine

Lloyd V

Verified Purchase

PROSEAL 0890B002 SEALING COMPOUND 6OZ CARTRIDGE / 3.5 FL OZ MATERIAL KIT

January 24, 2023

Was easy to mix but had no tip for pointed application

Craig S

Verified Purchase

PROSEAL 0890B002 SEALING COMPOUND 6OZ CARTRIDGE / 3.5 FL OZ MATERIAL KIT

December 20, 2022

Iv used pro-seal in the past but not a one shot deal. Had I known it was that I wouldnt bought it

Sterling F

Verified Purchase

PROSEAL 0890B002 SEALING COMPOUND 6OZ CARTRIDGE / 3.5 FL OZ MATERIAL KIT

December 16, 2022

Afelio S

Verified Purchase

PRO SEAL FUEL TANK SEALANT PS 890 B2 PINT

December 8, 2022

By far the worst smelling chemical on earth. Sealing ability is superb.

Robert

Verified Purchase

PRO SEAL FUEL TANK SEALANT PS 890 B2 PINT

November 4, 2022

all good

William L

Verified Purchase

PRO SEAL FUEL TANK SEALANT PS 890 B2 PINT

July 2, 2022

I love this product. It works. Thats what is important.

Natron A

Verified Purchase

PRO SEAL FUEL TANK SEALANT PS 890 B2 PINT

April 19, 2022

Sandy P

Verified Purchase

PROSEAL 0890B002 SEALING COMPOUND 6OZ CARTRIDGE / 3.5 FL OZ MATERIAL KIT

January 18, 2022

Great for sealing seams

Terry L

Verified Purchase

PRO SEAL FUEL TANK SEALANT PS 890 B2 PINT

December 31, 2021

Great product,just make sure surface is clean.

Raymond H

Verified Purchase

PRO SEAL FUEL TANK SEALANT PS 890 B2 PINT

September 22, 2021

Douglas E

Verified Purchase

PRO SEAL FUEL TANK SEALANT PS 890 B2 PINT

July 21, 2021

I have used this product for many years. If you buy the tube pull the dasher rod out of the tube and unscrew it from the little mixer inside. Pop the plunger in the rod up with a pick and you can then measure out the amount you need separately from the rod which holds the catalyst and using a screwdriver handle to push the plastic plunger in the tube. Hope this helps Mike

Michael T

April 15, 2020

Great Product. Covers well. Easy clean up with MEK.

Jim R

December 23, 2019

I tested thinning the proseal with MEK to the consistency of thin soup and it cured indistinguishably from the undiluted proseal. The thinned proseal is much easier to apply in my opinion. Great product.

Randy W

June 21, 2019

Gets the job done. Ready to go in 24 hrs.

Paul

March 26, 2019

Refrigerating the compound after mixing will extend the pot life. This stuff is messy but very effective.

John B

August 12, 2018

Best stuff on the market its never cracked or shrunk on any of my builds and as always aircraft spruce shipped quickly

William E

April 2, 2018

Bought this sealant to repair a leak in my fuel tank, worked perfectly.

Robert M

July 30, 2017

very nice you have all range

Surender

June 26, 2016

Tip: Keep refrigerated after using....2 years and going strong!

Hr2pilot

October 1, 2013

WORKS GREAT BUT, EASE OF USE IS LESS THAN OPTIMAL.

Randy W

August 1, 2019

The tubes of sealant are as always fantastic. However your kit is not complete without the screw in dispensing nozzle. !

Kevin

August 3, 2018

I am rating aircraft spruce as I have not yet used the product. The product description and information on the web site was the same for kit, pint or quart. I thought I was buying 6 oz kit with a dispenser and two separate containers of sealant and hardener to be mixed (10/1) as needed for my project. What I got was a kit in a applicator that had to be mixed and used within 2 hour or wasted. The product may be good but totally inappropriate for my project (single use). I explained the problem and requested a return label twice last week but have had no response. This product plus shipping is just too expensive to just forget about it. I have ordered a Lodi from ACS and most of the time they have been good, but this time they did not live up to expectation.

Larry

March 26, 2020

I wanted a kit with one container with base and one with hardener so that I could measure out and mix small amounts to seal leaks, and then have material to do that again next time I found a leak. I got the single use tube that mixes inside the tube and has to be all used at one time. It would be nice if this site told you which you were getting. If they are all the single use tubes then you should remove the two container kit from the picture. Ive used Pro-seal before and it worked well so this is not a complaint about Pro-seal.

James M

December 8, 2019

Product from PPG is great but customer service and sales was very slow!

Kite A

Verified Purchase

PRO SEAL FUEL TANK SEALANT PS 890 B2 PINT

February 24, 2022

Good product only thing is the “kit” doesn’t come with a nozzle and also it says 6oz and it’s only 3.2 oz

Woodley A

Verified Purchase

PROSEAL 0890B002 SEALING COMPOUND 6OZ CARTRIDGE / 3.5 FL OZ MATERIAL KIT

July 14, 2021

Q&A

Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Can this Pro-Seal be used on plastic gas tanks?

Per our tech: This a tricky one. The manufacturer doesn't recommend it, but builders have used it as a sealant for fuel probes and gaskets for years. The manufacturer doesn't have any lab tests to show how well it works or doesn't work on plastic, so they will not recommend it.

Q: What is the working time of this Pro-Seal sealant? I need something that has a 2 hour work time.

Part # 09-38560 has a 2 hour work time, 64 hr tack free time, and 112 hr cure time. Variations in temperature and humidity can affect cure time.

Q: Can Pro-Seal be used for fiberglass tanks?

The manufacturer has not tested this material on fiberglass, so they can not guarantee how well it will adhere, but in general, if the surface is contamination free and has a smooth surface, it will adhere. We suggest contacting whoever made the tank, and ask their suggestion for sealing cracks, or pin holes, in the tank.

Q: Can I use ProSeal to seal an oil tank for a race car?

The manufacturer does not list any tests for oil, but it should work fine for pin holes and sealing around rivets on aluminum tanks.

Q: Which solvent do I use to clean and remove the uncured sealant?

There are a few solvents you could use. We recommend using one of the RPM Technology products. Please click the link below for the listing:

Click Here for RPM Technologies Products

Q: Is this Pro-seal a Type I Class B sealant?

It is a Class II Type B2 sealant

Q: Is this Pro-Seal sealant resistant to ethanol?

Over the years it has been used in applications with ethanol, but there are no lab tests or certs to show it will work.

Q: Is this product Proseal 1425? Can it be used to seal plexiglass windows to aircraft frames?

No. This product is not the PPG PR1425, but we do have a 3M AC-251 window and canopy sealant part number 09-04008 that should work for your application.

Q: Does Proseal product withstand automobile fuel?

The manufacturer provided us no data for testing with auto fuel. You will need to run your own tests to determine if it will work for your application.

Q: One reviewer mentioned that there was a needed nozzle with the tubes. Does that now come with them or do we have to buy that someplace else?

PPG does not provide the nozzle. We offer nozzle part number 02-00099 that can be used with the PPG SEM kits.

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