FAA approved replacements for PRC/PPG Aerospace Sealants.

NSL1428 Class B

NSL1428: Access Door Sealant

NSL1428 is an access door sealant intended for use on integral fuel tanks and pressurized cabins.  It is used as a strippable fillet and as a gasket of removable parts, designed to access areas where easy separation of joint surfaces is required. This product is an FAA approved PMA replacement for PPG’s PR-1428. Learn more below or request a quote today.

Eligible manufacturers for NSL1428 series per FAA PMA Supplement PQ4210CE* include:

Boeing, Bombardier, Cessna, Dassault Aviation, Embraer, Rolls Royce

*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-½ B-2
  • Application Life (hrs): ½2
  • Tack Free Time (hrs): <6<24
  • Cure Time (hrs): <10<24
Shelf Life: 9 months | Consistency: Paste | Color: Red

*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.

Technical Data Sheets (TDS)

Safety Data Sheet (SDS)

NSL Product Guides