NSL PMA Sealant

FAA approved replacements for PRC/PPG Aerospace Sealants.

NSL1750 Class B

NSL1750: High Temperature Aviation Fuel Tank and Fuselage Sealant

NSL1750 is a high-temperature, fuel resistant aviation 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.

See the complete list of NSL1750 eligible makes and models or click the part number to access the FAA PMA supplement:
NSL1750B1/2: Sup. 1, Sup. 5
NSL1750B2: Sup. 1, Sup. 5

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

Cure Profile:B1/2B2
Application Life (hrs):1/22
Tack Free Time (hrs):2020
Cure Time (hrs):3072

Shelf Life: 9 monthsConsistency: PasteColor: 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.


Why don’t we have pricing on our product page? Because pricing is not a one-size-fits-all proposition. There are multiple variables determining product price, such as:

  • Part name, type, class, or manufacturer
  • Size
  • Quantity
  • Specification
  • Shelf life requirement
  • Purchaser type: Distributor or end-user?

Every quote is custom, created just for you and your specific needs. Please fill out the form on our CONTACT US page and we’ll be in touch ASAP.

NSL1750 Class B - PMA Replacement for PR-1750

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)

Product Resources

Technical Data Sheets (TDS)

Safety Data Sheets (SDS)

NSL Product Guides