35% Hydrogen Peroxide undiluted is an oxidizer and corrosive. Most hot tubs use newer material for seals and gaskets which are compatible with hydrogen peroxide. Although the concentration level is very low after adding 35% Hydrogen Peroxide to a hot tub knowing what materials are best is always good.
Natural rubber is not compatible with hydrogen peroxide. The rubber will break down fairly quickly and the reason “eye droppers” should not be used to dispense 35% Hydrogen Peroxide.
For Hydrogen Peroxide 30% +. A “C” rating may work for some industrial application however we do not recommend using materials with a “C” or “D” as to avoid possible unwanted chemical residue from material degradation.
| Material | Compatibility |
|---|---|
| ABS plastic | N/A |
| Acetal (Delrin®) | D – Poor |
| Aluminum | A – Excellent |
| Brass | N/A |
| Bronze | B – Good |
| Buna N (Nitrile) | D – Poor |
| Carbon graphite | C -Not Rec. |
| Carbon Steel | D – Poor |
| Carpenter 20 | B – Good |
| Cast iron | B – Good |
| Ceramic Al203 | N/A |
| Ceramic magnet | A – Excellent |
| ChemRaz (FFKM) | B – Good |
| Copper | D – Poor |
| CPVC | A – Excellent |
| EPDM | B – Good |
| Epoxy | B – Good |
| Fluorocarbon (FKM) | A – Excellent |
| Hastelloy-C® | A – Excellent |
| HDPE | A -Excellent |
| Hypalon® | D – Poor |
| Kalrez | A – Excellent |
| Kel-F® | B – Good |
| LDPE | C – Not Rec. |
| Natural rubber | D – Poor |
| Neoprene | D – Poor |
| NORYL® | A – Excellent |
| Nylon | D – Poor |
| Polycarbonate | A – Excellent |
| Polyetherether Ketone (PEEK) | A – Excellent |
| Polypropylene | B – Good |
| Polyurethane | B – Good |
| PPS (Ryton®) | A – Excellent |
| PTFE | A – Excellent |
| PVC | A1 – Excellent |
| PVDF (Kynar®) | A – Excellent |
| Silicone | B – Good |
| stainless steel – 304 | B – Good |
| stainless steel – 316 | B – Good |
| Titanium | B – Good |
| Tygon® | B – Good |
| Viton® | A – Excellent |
Ratings – Chemical Effect
A – Excellent
B – Good: Minor Effect, slight corrosion, or discoloration.
C – Moderate Effect, not recommended .
D – Severe Effect: Not recommended for any use.
There are many types of elastomer material the list above are some of the more common.