Client’s HNBR pump seals were failing prematurely (3-month service life) when pumping 30% sulfuric acid at 80°C, causing unplanned shutdowns and costly line stoppages.
Reformulated to Viton FKM 75A compound with specific acid resistance. Validated via 1000-hour immersion test in H₂SO₄ at 80°C. Applied PTFE-coated mold cavity for flash-free finish.
Seal service life extended from 3 months to 24+ months. Zero failure incidents across 12-month field validation. Client maintenance costs reduced by 65%.
DFM Analysis: Optimized O-ring cross-section and groove dimensions to ISO 3601 standards — eliminated previous installation damage that contributed to premature failure.
Our engineers work from your CAD drawings before any tooling begins — identifying potential failure modes, proposing material alternatives, and validating gate/cooling layouts digitally. This eliminates costly mold revision cycles.
Physical test results from production samples — available with every shipment on request.
| Property | Before (HNBR) | After (FKM 75A) |
|---|---|---|
| Service Life in H₂SO₄ 30% | 3 months | 24+ months |
| Volume Swell (H₂SO₄ 1000h) | +45% | +4.2% |
| Tensile Strength | 14 MPa | 18 MPa |
| Hardness Change | -18 Shore A | -2 Shore A |
Share your drawings, quantity and material requirements. Our team performs a complimentary DFM review before quoting.
