FAA approved replacements for PRC/PPG Aerospace Sealants.

NSL1750 Class B

NSL1750: High Temperature Fuel Tank and Fuselage Sealant

NSL1750 is a high-temperature, fuel resistant sealant designed for fillet sealing of fuel tanks and other areas requiring a weathertight and fuel resistant seal. This product is an FAA-approved PMA sealant for PPG’s PR-1750 sealant. Learn more below or get a quote today.

Replacement For: PR-1750 Class B
Conforms To: AMS3276 & MIL-S-83430 by FAA-PMA Approval

Eligible manufacturers for NSL1750 series per FAA PMA Supplement PQ4210CE* include:

Bombardier, CFM International, McDonnell Douglas, Pratt & Whitney.

*Click part number for FAA links:

Packaging: Available in 2½ - and 6-oz. cartridges, pint, quart and gallon kits. Also available in premixed and frozen cartridges. Other-size packaging available upon request.

Technical Data: Class B*
  • Cure Profile: B-½B-2
  • Application Life (hrs): ½2
  • Tack Free Time (hrs): 2020
  • Cure Time (hrs): 2448
Shelf Life: 9 months | Consistency: Paste | Color: Gray

*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.
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Technical Data Sheets (TDS)

Safety Data Sheet (SDS)

NSL Product Guides

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