Flamemaster
Chemseal CS3204 Class B Tank Sealant (AMS-S-8802)
A two-part polysulfide tank sealant to AMS-S-8802, with the listing's own table of tack-free and cure times by grade.
Where to buy
AmericaDistributor coming soonOur partner for this region is on its way
EuropeDistributor coming soonOur partner for this region is on its way
OceaniaDistributor coming soonOur partner for this region is on its way
More distributors
AmericaMore distributors coming soon
EuropeMore distributors coming soon
OceaniaMore distributors coming soon
The listing includes a cure table by grade (B-1/2 to B-4): application life, tack-free time and cure time in hours. Read the grade number as roughly the working time.
The same class of product as PS-890 B2.
Specifications
| Maker | Flamemaster (Chemseal) |
|---|---|
| Specification | AMS-S-8802 (formerly MIL-S-8802), among others listed |
| Use | Integral fuel tanks, pressurized cabins, areas exposed to fuel, oil and weather |
| Kits | 2.5 oz cartridge (2 oz), 6 oz cartridge (3.5 oz), 6 oz can (16 oz), quart |
Source: a distributor's listing, checked 2026-09-30.
Cure profile (as listed) 2 rows
| B- | B- | B-1 | B-2 | B-4 | |
|---|---|---|---|---|---|
| Tack-free time (h) | 6 | 8 | 15 | 24 | 36 |
| Cure time (h) | 16 | 30 | 40 | 72 | 90 |
Questions people actually ask
What specification does the Flamemaster Chemseal B2 Tank Sealant CS3204 Gray meet?
AMS-S-8802 (formerly MIL-S-8802), among others listed, according to the distributor listing checked on 2026-09-30.
Where can I buy the Flamemaster Chemseal B2 Tank Sealant CS3204 Gray?
A distributor we checked lists it in the Americas. The link to its page, with the live price and stock, opens when the partnership does.
More sealants
Sealants
PR1440 Fuel Tank Sealant
- TypeTwo-part manganese dioxide cured polysulfide
- Service temperature-54 °C to 121 °C, excursions to 135 °C
- Packaging100 ml and 150 ml Semkits
EU
Sealants
PR1750 Fuel Tank Sealant
- TypeTwo-part manganese dioxide cured polysulfide
- Service temperature-54 °C to 121 °C, excursions to 182 °C
- Packaging150 ml Semkit (01750AB015)
EU
Sealants
PS870 Corrosion Inhibitive Sealant
- TypeTwo-part manganese dioxide cured polysulfide
- Service temperature-54 °C to 121 °C, excursions to 135 °C
- Packaging100 ml Semkits
EU
Sealants
PR812 Firewall Sealant
- TypeTwo-part synthetic rubber
- Service temperature-54 °C to 204 °C; flash to 1093 °C
- Packaging100 ml Semkit (PR812SKIT)
EU
Sealants
Pro-Seal Fuel Tank Sealant P/S 890 B2
- TypeTwo-part manganese dioxide cured polysulfide
- Service temperature-54 °C to 121 °C, excursions to 135 °C
- ClassB: low-sag paste for fillet sealing
USSealants
Pro-Seal Fuel Tank Sealant 890 A2
- TypeTwo-part manganese dioxide cured polysulfide
- Service temperature-54 °C to 121 °C, excursions to 135 °C
- ClassA: brush and fay sealing, up to 25 mils
US