As listed
| Field | Value |
|---|---|
| Seller | LAS Aerospace |
| Seller's item # | A01I4L4B7 |
| Type | Two-part manganese dioxide cured polysulfide |
| Class A | Brush, up to 25 mils |
| Class B | Low-sag paste, gun or spatula |
| Class C | Roller and faying-surface sealing |
| Service temperature | -54 °C to 121 °C, excursions to 135 °C |
| Packaging | 100 ml Semkits |
| Listing checked | 2026-09-30 |
Taken from LAS Aerospace's product page on 2026-09-30. Where the listing does not state a figure, this table does not either.
What it is for
Class C is the one for faying surfaces: the sealant between two parts riveted together. LAS lists it as resisting only limited fuel exposure; for fuel tanks see PR-1440.
Which class a joint calls for is in the maintenance data.
Sizes listed
| Part | Class | Cure Time |
|---|---|---|
| PS870AB100 | Class A | 2 Hour |
| PS870BA100 | Class B | 1/2 Hour |
| PS870BB100 | Class B | 2 Hour |
| P870C12100 | Class C | 1/2 Hour |
As listed by LAS Aerospace on 2026-09-30. Check the live listing before ordering: stock and part numbers change.
Where to buy
The link opens LAS Aerospace'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
- LAS Aerospace — PS870 Corrosion Inhibitive Sealant — product listing, item A01I4L4B7, checked 2026-09-30.