PS-890 at a glance
Where to buy
Designation
| Item | Value |
|---|---|
| Designation | PS-890 |
| Class | Sealants |
| Type | polysulfide sealant |
Data from the guide
| Item | Value |
|---|---|
| Product | PS-890 |
| Maker | PPG |
| Form and class | Two-part, manganese dioxide cured; Classes A, B, C |
| Life and cure (from the source) | Distributor lists A-2 at 2 h, B-4 at 4 h, C-80 at 80 h |
| Specification stated | AMS-S-8802, BMS 5-45 (distributor) |
Sources: PPG PR-1422 sheet (09/10); distributor listings for PS-890 and PR-1440; PPG PR-1776M page; Flamemaster CS 3201 bulletin. Distributor lists are not PPG data sheets.
In stock
| Distributor sheet | Listed |
|---|---|
| Pro-Seal Fuel Tank Sealant 890 A2 | Class A · brush · 3.5 fl oz |
| Pro-Seal Fuel Tank Sealant P/S 890 B2 | Class B · fillet · -54/121 °C |
As distributors list them, not a statement of what a specification allows.
As listed by the sellers
| Item | Value |
|---|---|
| Type | Two-part manganese dioxide cured polysulfide |
| Class | A: brush and fay sealing, up to 25 mils |
| Service temperature | -54 °C to 121 °C, excursions to 135 °C |
| Class | B: low-sag paste for fillet sealing |
| Grade | B2 |
The seller's statements, not a qualification.
Notes from the guide
- Distributor lists for PR-1440 and PS-890: they are not PPG data sheets.
- No cross-reference table is authoritative. The SRM and the specification's QPL decide equivalents.
- Specifications are cited as the sources print them. AMS-S-8802 text is paid and was not read.
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
Distributors coming soon.
Sources
- PPG Aerospace, PR-1422 Class B Fuel Tank Sealant, data sheet (issue 09/10, Lit 0157) — Application life, tack-free, cure, slump, service range, storage; tests per AMS-S-8802 Class B.
- Flamemaster Corporation, Chem Seal CS 3201 Technical Bulletin — Two-part polysulfide: classes A and B, mixing, temperature effect on application life, hardness, adhesion.
- PPG PS890 B-1/2 Fuel Tank Sealant (distributor listing) — Two-part manganese dioxide cured polysulfide, service range, classes. Distributor listing, not the PPG data sheet.
- PPG PR-1440 B-1/2 Fuel Tank Sealant (distributor listing) — AMS-S-8802D Type 2 designation. Distributor listing, not the PPG data sheet.
- PPG Aerospace, PR-1776M Class B Low Weight Fuel Tank Sealant (product page) — Described by PPG as a manganese dioxide cured Permapol P-5 modified polysulfide; service range.
- PPG PR1776M B-2 Low Weight Fuel Tank Sealant (distributor listing) — AMS 3281 Type 1 Class B-2 and BMS 5-45 Class B-2.
- Sealant application bulletin: class and applications (distributor document) — Class A brush, B fillet, C rollable.
- SAE International, AS5127/1C: Test Methods for Aerospace Sealants, Two-Component Synthetic Rubber Compounds — Scope: test methods for two-component sealing compounds.
- Distributor listings — stock forms, sizes and listed facts, read 30 September 2026.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.