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NSL1776M B1/2: Lightweight Aviation Fuel Tank and Fuselage Sealant

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NSL1776M B1_2 Class B - PMA Replacement for PR-1776M Class B

NSL1776M B1/2: Lightweight Aviation Fuel Tank and Fuselage Sealant

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NSL1776M B1/2 is a lightweight aviation sealant for use on fuel tanks and aircraft fuselage as well as other areas subject to contact with aircraft fuels, lubricants, oils, water and/or weathering. This is an FAA approved PMA replacement for PPG’s PR-1776B1/2 sealant that cures at least 50% faster.

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See the complete list of NSL1776M B1/2 eligible makes and models or click the part number to access the FAA PMA supplement: NSL1776M B1/2: Sup. 2, Sup. 4, Sup. 5


Technical Info


Application Life

30 mins



Dark Gray



Cure Time

< 6 hrs

Mixing Ratio



2.5 oz, 6 oz, pint, quart, gallon


2 parts

Shelf Life

12 months

Tack Free Time

< 4 hrs

PMA Replacement For:

Hazardous No

Please consult the technical data sheet for specificities of environmental conditions that yielded the above data. Standard cure rates are based on industry curing standards.

NSL PMA Sealants

  • Non-critical Part (FAA AC 43-18 (2))
  • FAA Approved (Supplement PQ4210CE)
  • 8130 Airworthiness Approval
  • PPG/PRC replacement
  • 30%-50% cost savings on average
  • Faster turnaround
  • Customizable packaging
  • Available pre-mixed and frozen (PMF)


Find Eligible Aircraft for NSL1776M B1/2

1. Surface Preparation

2. Mixing Instructions

3. Application