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NSL870 B1/2: Corrosion Inhibitive Aviation Sealant

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NSL870B1/2 Class B - PMA Replacement for P_S870 Class B

NSL870 B1/2: Corrosion Inhibitive Aviation Sealant

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NSL870 B1/2 is a corrosion inhibitive aviation sealant intended 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. This is an FAA-approved PMA replacement for PPG’s PS-870B1/2 sealant.

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See the complete list of NSL870 B1/2 eligible makes and models or click the supplement numbers below to access the FAA PMA supplement: NSL870 B1/2: Sup. 2, Sup. 5


Technical Info


Application Life

30 mins






Cure Time

24 hrs

Mixing Ratio



2.5 oz, 6 oz, pint, quart, gallon


2 parts

Shelf Life

9 months

Tack Free Time

5 6 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 NSL870 B1/2

1. Surface Preparation

2. Mixing Instructions

3. Application