NSL1422A1/2 Aviation Fuel Tank Sealant

Replacement for PRC-DeSoto Sealant PR-1422 A1/2, PR-1440 A1/2, ProSeal P/S 890/890M A1/2

Below are the makes and models of aircraft that, per the FAA, NSL1422 A1/2 is eligible for use in replacement of PR-1422 A1/2, PR-1440 A1/2, AND P/S 890 and P/S 890M A1/2.

Like all of our PMA sealants, NSL1422 A1/2 is a cost-saving alternative product that can be safely used in place of the original part. That’s because PMA manufacturers like us submit to a rigorous review process with the FAA in order to ensure that our parts are airworthy. With that approval, you can know that this PMA part will function the same or better than the OEM part. Find out more about PMA parts with our Introductory Guide to PMA Sealants.

NSL1422 A1/2 is a fuel resistant sealant for use on integral fuel tanks and pressurized cabins as well as other areas subject to contact with aircraft fuels, lubricants, oils, water, and/or weathering. It is a two-part polysulfide base compound which cures at room temperature to a flexible, resilient rubber.

NSL1422 A1/2 has an application life of 30 minutes, tack free time of less than 8 hours, and cure time of less than 30 hours. Find packaging details on the NSL1422 A1/2 product page.