As listed
| Field | Value |
|---|---|
| Seller | Aircraft Spruce |
| Seller's item # | 09-04643 |
| Type | Two-part manganese dioxide cured polysulfide |
| Class | B: low-sag paste for fillet sealing |
| Service temperature | -54 °C to 121 °C, excursions to 135 °C |
| Grade | B2 |
| 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 brushable grade for fastener and faying seals is PS-890 Class A. The European listing for the same chemistry is PR-1440 at LAS.
Which class and grade a repair calls for is in the maintenance data.
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 — Pro-Seal Fuel Tank Sealant P/S 890 B2 — product listing, item 09-04643, checked 2026-09-30.