As listed
| Field | Value |
|---|---|
| Seller | Aircraft Spruce |
| 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 |
| Listing checked | 2026-09-30 |
Taken from Aircraft Spruce's product page on 2026-09-30. Where the listing does not state a figure, this table does not either.
What it is for
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.
Cure profile (as listed)
| 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 |
Reproduced as the listing prints it: two grades are labelled only "B-", and the application-life row gives three values (1, 2 and 4 h) for five grades without saying which. Check the maker's data sheet before relying on a grade.
Where to buy
The link opens Aircraft Spruce's own page for this item, so the price and stock you see are theirs and current. We do not copy prices.
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Sources
- Aircraft Spruce — Flamemaster Chemseal B2 Tank Sealant CS3204 Gray — product listing, checked 2026-09-30.