Hydrogen Peroxide Resistant O-Rings
Compatibility ratings for 7 O-ring materials in Hydrogen Peroxide service
Hydrogen Peroxide (Oxidizers) compatibility with the seven most common O-ring elastomers, rated on the standard A/B/C/D scale: A = excellent, B = good, C = fair, D = not recommended. This data also appears in our interactive chemical compatibility chart and is available machine-readable at /api/chemicals.json.
| Material | Rating | Guidance |
|---|---|---|
| NBR | C | fair — conditional use, verify with testing |
| FKM | B | good — suitable for most applications |
| EPDM | C | fair — conditional use, verify with testing |
| VMQ | C | fair — conditional use, verify with testing |
| PTFE | A | excellent — recommended for continuous service |
| FFKM | A | excellent — recommended for continuous service |
| HNBR | C | fair — conditional use, verify with testing |
Why These Ratings
- NBR (C) — documented weaknesses include “Strong acids.”
- VMQ (C) — documented weaknesses include “Concentrated acids and alkalis.”
- PTFE (A) — documented strengths include “Strong oxidizing acids.”
- FFKM (A) — documented strengths include “Concentrated oxidising acids.”
- HNBR (C) — documented weaknesses include “Strong acids.”
OxidizersService: Concentration & Temperature Notes
Oxidizers attack the polymer backbone itself rather than merely swelling it. Ozone is the classic case — NBR rates D while FKM, EPDM and the fluorocarbons rate A, because NBR's unsaturated backbone is ozone-reactive. Chlorine water and hydrogen peroxide intensify their attack with concentration and temperature; PTFE and FFKM are the safe defaults.
Recommended
- PTFE O-rings (A)
- FFKM O-rings (A)
Use With Caution
- NBR O-rings (C)
- FKM O-rings (B)
- EPDM O-rings (C)
- VMQ O-rings (C)
- HNBR O-rings (C)
Avoid
No material is rated D for this chemical.
Related Chemicals (Oxidizers)
Frequently Asked Questions
Is Hydrogen Peroxide compatible with FKM (Viton) O-rings?
FKM is rated B for Hydrogen Peroxide: good — suitable for most applications. Ratings are general guidelines; concentration, temperature and exposure time all affect real-world compatibility, so validate critical applications with ASTM D471 immersion testing.
Is Hydrogen Peroxide compatible with NBR (nitrile) O-rings?
NBR is rated C for Hydrogen Peroxide: fair — conditional use, verify with testing. NBR is the lowest-cost elastomer, so when it earns an A or B rating it is usually the economical default; when it rates C or D, do not substitute it for a higher-rated material to save cost.
Can I use PTFE O-rings with Hydrogen Peroxide?
PTFE is rated A for Hydrogen Peroxide: excellent — recommended for continuous service. Remember that PTFE has no elastic memory — in demanding service it needs spring energization or an elastomer core (FEP/PFA encapsulation) to maintain sealing force.
What is the best O-ring material for Hydrogen Peroxide?
PTFE, FFKM are rated A (excellent) for Hydrogen Peroxide in our compatibility data and are the recommended starting point for material selection. Final selection should also account for operating temperature, pressure and whether the seal is static or dynamic.
Can I use EPDM O-rings with Hydrogen Peroxide?
EPDM is rated C for Hydrogen Peroxide: fair — conditional use, verify with testing. Always confirm the specific fluid concentration and temperature before specifying EPDM for this service.
Need O-Rings for Hydrogen Peroxide Service?
Send us your fluid, concentration and temperature — our engineers will confirm the right compound. MOQ 1 piece.