NSL PMA Sealant

FAA approved replacements for PRC/PPG Aerospace Sealants.

NSL1422 Class A & B

NSL1422: Aviation Fuel Tank Sealant

NSL1422 is a fuel resistant 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. It is an FAA-approved PMA replacement for PPG’s PR-1422 sealant. Learn more below or get a quote today.

At room temperature, this two-part polysulfide base compound cures to a flexible, resilient rubber. Get a quote for this product today.

Replacement For: PR-1422 Class A & B
Conforms To: AMS-S-8802 & BMS5-26U by FAA-PMA Approval

Eligible manufacturers for NSL1422 series per FAA PMA Supplement PQ4210CE* include:
Airbus, ATR, Boeing, Bombardier, CFM International, Dassault Aviation, Embraer, Lockheed, McDonnell Douglas, Pratt & Whitney.

See the complete list of NSL1422 eligible makes and models or click the part number to access the FAA PMA supplement:
NSL1422A1/2: Sup. 1 Pt.1, Sup. 1 Pt.2
NSL1422A2: Sup. 1
NSL1422B1/2: Sup. 1
NSL1422B2: Sup. 1

Conforms To: AMS-S-8802 & BMS5-26U by FAA-PMA Approval

Packaging: Available in 2 1/2 – 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: A-½A-2
Application Life (hrs):½2
Tack Free Time (hrs):<8<24
Cure Time (hrs):<30<72

Shelf Life: 9 monthsConsistency: Self-levelingColor: Gray

Cure Profile:B-½B-2
Application Life (hrs):½2
Tack Free Time (hrs):<8<24
Cure Time (hrs):<30<72

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.

NSL1422 Class A-B - PMA Replacement for PR-142

Bulk In Stock

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