molded EVA foam parts
// The softest foam we work with, and the one that stretches furthest — over 200% elongation. Choose EVA where the foam has to hug a curved surface, seal a gap, or be squeezed thousands of times and still recover: gaskets, liners, hand-contact surfaces, sports and medical parts. Water absorption stays under 1%.
Property comparison· click a grade to highlight
| Property | EV30 | EV50 | Test method |
|---|---|---|---|
| Nominal density (g/L) | 30 | 50 | ISO 7214:2012 |
| Average cell diameter (mm) | 0.4 | 0.4 | — |
| Compression stress (kPa) | ISO 7214:2012 | ||
| @ 25% strain | 39 | 50 | |
| @ 50% strain | 100 | 116 | |
| Tensile strength (kPa) | 520 | 749 | ISO 7214:2012 |
| Elongation at break (%) | 205 | 243 | ISO 7214:2012 |
| Compression set, 50% / 22 h (%) | ISO 7214:2012 | ||
| after 0.5 h recovery | 13 | 9 | |
| after 24 h recovery | 4 | 2 | |
| Tear strength (kN/m) | 1.675 | 2.880 | ISO 8067 Method B |
| Hardness (Shore OO) | 40 | 46 | ISO 868:2003 |
| Recommended max service temp (°C) | 65 | 65 | — |
| Water absorption (%) | <1 | <1 | ISO 2896:2001 |
Grade selection guide
Conforming liners · soft-touch surfaces · light sealing
EV30 · 30 g/L39 kPa @25% · Shore OO 40The softer of the two — it takes the shape of what it wraps.
Repeated-use gaskets · straps · load-bearing pads
EV50 · 50 g/L50 kPa @25% · 2.880 kN/m tearStronger, tougher, and recovers to within 2% after 24 h.
// Different structures, different test standards — read this as a shortlist aid, not a like-for-like ranking. Tell us the load, temperature and handling your part sees, and we will narrow it down with you.
| Property | EPP | EPO | E-PE | EVA |
|---|---|---|---|---|
| Structure | Molded PP bead foam | PS/polyolefin composite bead foam | Molded PE bead foam | Cross-linked closed-cell EVA |
| Density range | 20–66 kg/m³ | 16–33 g/L | 20–74 g/L | 30–50 g/L |
| Compression stress @25% | 80–395 kPa | 120–190 kPa | 60.7–296.5 kPa | 39–50 kPa |
| Tensile strength | 420–1350 kPa | 0.28–0.53 MPa | 275.8–827.4 kPa | 520–749 kPa |
| Elongation at break | ≥15% | 7.6–9.7% | 22–38% | 205–243% |
| Thermal conductivity | ≈0.036–0.042 W/(m·K) | 0.037–0.039 W/(m·K) | 0.0346–0.0433 W/(m·K) | not published |
| Service temperature | ≈ up to 100°C | 80°C automotive evaluation¹ | max 80°C | max 65°C recommended |
| Water absorption | ≤8% | not published | <5 vol.% | <1% |
| Character | Tough, resilient, reusable — the workhorse | Stiffer support with impact resistance | Flexible, water-resistant, widest density span | Soft, high elongation, conforms and rebounds |