Engineered for extremes
HNBR H2 90P
Read the code: HNBR, H2 duty (hydrogen service), 90 Shore A, P for peroxide cure, recipe 01.
Development grade. The values below are design targets, not measured results. Each target becomes a typical value, with the number of lots and the test report behind it, as testing is completed.
A 90 Shore A high-modulus HNBR for high-pressure hydrogen: compressor head and valve seals, station storage and high-pressure valves. Designed for rapid decompression in 100 % hydrogen at up to 87.5 MPa, for extrusion resistance with back-up rings, and for low permeation among the hydrocarbon rubbers.
- Polymer class
- HNBR
- Duty
- H2: hydrogen service
- Hardness
- 90 Shore A
- Temperature range
- -25 to 150 °C
- Lead time
- Trial quantities on request
- Minimum order
- 25 kg
- Issued
- 2026-10-28
- Revision
- A
- Packing
- Per order
Design targets and release limits
| Property | Target | Limits | Unit | Method |
|---|---|---|---|---|
| Hardness | 90 | 85 to 95 | Shore A | ASTM D2240 / ISO 48-4, 1 s |
| Specific gravity | 1.22 | ±0.02 of approved value | ASTM D297 / ISO 2781 | |
| Tensile strength | 22 | min 18 | MPa | ASTM D412 die C / ISO 37 type 2 |
| Elongation at break | 160 | min 120 | % | ASTM D412 die C / ISO 37 type 2 |
| Modulus at 100 % | 12 | 9 to 15 | MPa | ASTM D412 die C / ISO 37 type 2 |
| Compression set, 22 h at 150 °C | 18 | max 25 | % | ASTM D395 method B, button |
| TR10 | -22 | max -20 | °C | ASTM D1329 / ISO 2921 |
| IRM 903, 168 h at 125 °C, volume change | +8 | max 15 | % | ASTM D471 / ISO 1817 |
| Hydrogen permeability, 23 °C | To report | Reported, no limit yet | ISO 2782-1 |
Qualification plan
The grade code says what this compound is designed for. This table says what it has passed: a duty is claimed only once its report is on file.
| Test | Standard or method | Conditions | Status |
|---|---|---|---|
| Rapid decompression in hydrogen | ISO 23936-2 Annex B adapted to 100 % H2 | 100 % H2 at 15, 30 and 87.5 MPa, 100 °C, 8 cycles at about 2 MPa/min; 5.33 mm section; target rating 0000 to 1111 | Planned |
| Hydrogen ageing | ISO 23936-2 Annex A method in 100 % H2 | At 100 °C and 150 °C: volume, hardness and tensile change | Planned |
| Hydrogen permeability | ISO 2782-1 | Hydrogen at 23 °C and 85 °C | Planned |
| Pressure cycling | CSA/ANSI CHMC 2 test methods, with a compressor or valve maker | 10,000 cycles between 45 and 87.5 MPa (target) | Planned |
| Extrusion | In-house fixture, method published with results | With and without PEEK back-up rings at 87.5 MPa | Planned |
Design targets are the values the compound is designed to reach. They are not measured results and they are not a warranty. Release limits apply to lots once the recipe is approved. The grade code says what the compound is designed for; the qualification plan says what it has passed. Confirm suitability in your own application and fluids.
Every lot is supplied with a certificate of analysis. Enter the lot ID under Track on the website to see the lot record. Pascalor is an independent brand and is not affiliated with any polymer manufacturer named elsewhere on this site.
Registered entity name to be added | quotes@pascalor.com