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

CS5500 Class A & B

CS5500: High Temperature Fuel Tank Sealant

CS5500 from Flamemaster is a high-temperature fuel tank sealant intended for use on integral fuel tanks.

At room temperature, this two-part polysulfide cures to a flexible, resilient rubber. Learn more below or get a quote today.

Meets Requirements: AMS-3276 formerly MIL-S-83430, FMS1044 and FMS3055

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:A1/2A2
Application Life (hrs):1/22
Tack Free Time (hrs):816
Cure Time (hrs):1648

Shelf Life: 9 monthsConsistency: Self-levelingColor: Gray

Cure Profile:B1/2B2
Application Life (hrs):1/22
Tack Free Time (hrs):-16
Cure Time (hrs):-48-72

Shelf Life: 9 monthsConsistency: PasteColor: Dark 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.

Similar Products

CS5500 High Temperature Fuel Tank & Fuselage Sealant

Product Resources

Technical Data Sheets (TDS)

Safety Data Sheets (SDS)

NSL Product Guides