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Home / Airframe Parts / Fuel Systems / Fuel Tank Sealants /Pro-Seal Fuel Tank Sealant P/S 890 B - 1/2 Hour
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Pro-Seal Fuel Tank Sealant P/S 890 B - 1/2 Hour

12 Reviews 4 Answered Questions
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2.5 oz. 3.5 oz. Pint Kit
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Overview

P/S Class B is an aircraft integral fuel tank sealant. It as 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.

The following tests are in accordance with AMS-S-8802 Class B specification test methods.
   
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Reviews

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Good item and in stock in GA.

Thomas Verified Purchase

Proseal 0890B1/2 Pint Kit
July 29, 2023

Remember to purchase the tip which is sold separately.

Martin B Verified Purchase

Proseal PS890B-1/2 3.5 Fl Oz In 6Oz Cartridge Kit
February 3, 2023

bon produit merci.

Alain G Verified Purchase

Proseal 0890B1/2 Pint Kit
June 28, 2022

Eddie S Verified Purchase

Proseal PS890B-1/2 3.5 Fl Oz In 6Oz Cartridge Kit
February 8, 2022

The cartridge is definitely the way to go if you are doing long seams like replacing a front bubble window on a helicopter.

Wayne ( Verified Purchase

Proseal PS890B-1/2 3.5 Fl Oz In 6Oz Cartridge Kit
November 19, 2021

Excelent product👍👍👍

Afelio S Verified Purchase

Proseal 0890B1/2 Pint Kit
October 27, 2021

Frank M Verified Purchase

Proseal 0890B1/2 Pint Kit
June 25, 2021

No issues with purchasing, shipping or the product. The sealant was fresh and well within expiration date. Always a pleasure buying from /aircraft Spruce!

Jeff E
May 5, 2021

You did a great job keeping my backorders moving. Thx! BP

Bob P
May 3, 2021

Works great, sealed the fuel leak

Kevin
April 12, 2018

Q&A

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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: Does the pro seal plunger come with both parts of the compound? Is mixing still requried or does the plunger mix it for the user? Does the entire amount need to be used all at once? Can it be purchased in longer set up times?

Yes, this comes with both parts of the compound. Mixing is required, it will explain it on the instructions that come with the product. Yes, you would have to use the entire amount all at once. You can purchase it in longer working times referring to product P/N# 09-38510. This part will meet the same specs.

Q: What is the cure time?

7 hours at 77 degrees per the tech data sheet.

Q: Does Pro-Seal PS 890 B work on plastic tanks?

Yes this will work with plastic.

Q: Will this fit in a standard sized calk gun? If not, what size do I need?

It will not, you would use our part number 09-38520.

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