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

CS3201 Class A & B

CS3201: Fuel Tank Sealant

CS3201 from Flamemaster is a fuel resistant sealant intended for use as a sealing compound on integral fuel tanks and pressurized cabins as well as other areas subject to contact with aircraft fuels, lubricants, oils, water and/or weathering, and remains flexible at low temperatures.

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

Meets Requirements: AMS-7124 formerly MIL-S-7502/7124B

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:A1/4A1/2A2
Application Life (hrs):1/41/22
Tack Free Time (hrs):6924
Cure Time (hrs):243044

Shelf Life: 12 monthsConsistency: Self-levelingColor: Tan or Black

Cure Profile:B1/4B1/2B2
Application Life (hrs):1/41/22
Tack Free Time (hrs):3624
Cure Time (hrs):243044

Shelf Life: 12 monthsConsistency: PasteColor: Tan

*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.