As of March 7, 2021, we have fresh material and are shipping domestically and internationally.


CS3205 Class B

CS3205: Integral Fuel Tank Sealant

CS 3205 Class B from Flamemaster is a two-part, dichromate cured polysulfide base compound 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. Learn more below or get a quote today.


Meets requirements of specification:  AMS-S-8802, Ty I

Packaging: Available in 2 ½ and 6 oz cartridges, pint, quart, and gallon kits. Custom packaging available upon request.

Technical Data:  *
  • Cure Profile: B-½B-2
  • Application Life (hrs): ½2
  • Tack Free Time (hrs): <8<20
  • Cure Time (hrs): <24<48
Shelf Life: 9 Months | Consistency: Paste | Color: Dark Gray


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.

Request a quote

Technical Data Sheets (TDS)

Safety Data Sheet (SDS)

NSL Product Guides