| Concentration | Temp (°F) | Temp (°C) | PVC | Polypropylene (PP) | PVDF | PFA | PTFE | Stainless Steel 316 |
|---|---|---|---|---|---|---|---|---|
| — | 104 | 40 | No rating published | Excellent | Excellent | Excellent | Excellent | Excellent |
| — | 176 | 80 | No rating published | Excellent | Excellent | No rating published | Excellent | Excellent |
Legend: E = Excellent · G = Good · F = Fair · C = Corroded · (blank) = No rating published for this chemical/concentration/temperature combination — treat as unknown, not safe · A = Rating code not defined in the source vendor legend (appears once, Ammonium Sulfate/316SS) — shown as-is, not interpreted
| Variant | FFKM | FKM-ETP | TFE/P | FKM | HNBR |
|---|---|---|---|---|---|
| — | Good | Good | Good | Good | Good |
Ratings: 1 = Good, 2 = Fair, 3 = Poor, 4 = Not Recommended. Full dataset: Elastomer Seal Material Compatibility (2,110 chemicals).
| Variant | Sp. Gr. | CPVC | Glass-Filled PP | PVDF | Ryton PPS | ETFE | PTFE | 316 SS | Hastelloy C-276 | Titanium | Carbon | Ceramic | Silicon Carbide | EPDM | FKM | FEP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10% | — | 180 | 180 | 260 | 200 | 275 | 500 | 212 | 150 | 200 | 500 | 500 | 500 | 140 | 140 | 300 |
| 100% | — | 180 | 180 | 260 | 200 | 275 | 500 | 212 | 150 | 200 | 500 | 500 | 500 | 140 | 140 | 300 |
🔥 = flammable (flashpoint ≤140°F) — only flammable-rated pump materials should be used. "NR" = not recommended at any temperature, "ND" = no data published. Full dataset: Centrifugal Pump Material Resistance (280 chemicals).
| Variant | Flex-A-Prene® | Flex-A-Chem® | Flex-A-Thane® |
|---|---|---|---|
| 75% in w | Good | Excellent | Not Recommended |
Based on 28-day room-temperature (73°F) immersion testing. Full dataset: Peristaltic Pump Tube Compatibility (368 chemicals).
Source: Flowline chemical compatibility chart, real published vendor data, compiled by LibertyCES. Blank ratings mean no rating was published for that combination — treat as unknown, not safe. This data is a screening reference, not a final engineering approval; confirm with a manufacturer-specific data sheet before specifying equipment.
LibertyCES specifies and supplies the pumps, valves, tanks, piping, and instrumentation that store, transfer, meter, and contain tannic acid and other acids — never the chemical itself, always the equipment engineered to handle it.
Reviewed by James Riggins, Founder, LibertyCES — 30+ years specifying industrial fluid-handling equipment. Request a free spec review →
Full LibertyCES Chemical Compatibility Chart (551 rows) →
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Rated Excellent in at least one tested concentration/temperature condition: Polypropylene (PP), PVDF, PFA, PTFE, Stainless Steel 316. Always confirm against the exact concentration and temperature in your application — compatibility can shift across the range.
See the PVDF column in the table below for the specific concentration/temperature ratings published for Tannic Acid.
LibertyCES specifies pumps, valves, tanks, piping, and containment equipment for acids service, including Tannic Acid. See the equipment guides linked below, or request a free spec review.
Source: Liberty Chemical Equipment & Supply, Inc. (LibertyCES) — engineering data compiled and reviewed by James Riggins, Founder, LibertyCES, from real vendor and field-verified sources. For a free spec review, call James at (559) 395-5500 or email [email protected] / [email protected]. Website: libertyces.com.