ACF-50 at a glance
Where to buy
Designation
| Item | Value |
|---|---|
| Designation | ACF-50 |
| Class | Chemicals |
| Type | corrosion inhibiting compound |
Data from the guide
| Item | Value |
|---|---|
| Product | ACF-50 (Lear Chemical Research) |
| Type (as sold) | Anti-corrosion lubricant fog; flash point 79.4 C, SG 0.9, 25 cSt at 40 C, about 90 g/L VOC |
| Specification stated | MIL-C-81309E (distributor listing) |
| Source of the claim | Distributor listings |
Distributor listings and maker pages, not the full data sheets. Claims such as two years of protection are the makers' and are not independent test data.
In stock
| Distributor sheet | Listed |
|---|---|
| ACF-50 Anti-Corrosion Block Compound | MIL-C-81309E (listed) |
| ACF-50 Anti-Corrosion Formula | Aerosol · spray · 4 l |
As distributors list them, not a statement of what a specification allows.
As listed by the sellers
| Item | Value |
|---|---|
| Qualification (per the listing) | MIL-C-81309E |
| OEM approvals (per the listing) | Includes Cessna, Piper, Beech, Pilatus, Van's, Bombardier, Gulfstream and others |
| Type | Thin-film corrosion inhibiting compound |
The seller's statements, not a qualification.
Notes from the guide
- Distributor listings. We did not read the full maker data sheets for these products.
- Maker claims such as two years of protection are the makers' own.
- Compatibility with sealants and rubber is not covered; use the AMM.
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
- FAA AC 43.13-1B CHG 1, Chapter 6 (corrosion control, safety precautions, finishes) — Pars. 6-90 (safety precautions), 6-134 to 6-136 (finish, conversion coat, 48 hour rule, fasteners), section 4 (corrosion preventive maintenance, MIL-C-16173 Grade 4); par. 5-63 (cleaner types).
- Lear Chemical ACF-50 13 oz (distributor listing) — Flash point, specific gravity, viscosity and VOC as listed by the distributor.
- ACF-50 Corrosion Preventative (distributor listing) — Listing states it meets MIL-C-81309E.
- Corrosion Technologies, CorrosionX Aviation (product page) — Qualification listed as MIL-PRF-81309H Type II and Type IV.
- LPS 3 Premier Rust Inhibitor (product page) — Distributor states MIL-PRF-16173E Grade 2 Class 1.
- ITW Pro Brands, LPS 3 Premier Rust Inhibitor technical data sheet — Self-healing soft waxy film; protection claim for up to 2 years indoors.
- Boeshield T-9 (manufacturer site) — Boeing-developed solvent-and-wax rust protection.
- 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.