Flamemaster has been consistently producing quality sealants for the aerospace industry since 1942.


CS1900: Firewall Sealant

CS1900 from Flamemaster is a firewall sealant intended for use sealing firewall structures. Elastomeric at operating temperatures, it can withstand flash temperatures of 2000 deg F. Learn more below or get a quote from NSL Aerospace today.

Meets requirements of specification:  MIL-S-38249 Ty1

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:
  • Application Life (hrs):
  • Tack Free Time (hrs): N/A
  • Cure Time (hrs): 72
Shelf Life: 6 Months | Consistency: Paste | Color: Black

*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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