Engineered for extremes
HNBR Packer 75S
Read the code: HNBR, PKR duty (packer elements), 75 Shore A, S for sulfur 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 75 Shore A sulfur-cured HNBR for the centre element of multi-durometer packers: high elongation and tear strength so it can flow into the casing gap and seal, with HNBR heat and chemical resistance.
- Polymer class
- HNBR
- Duty
- PKR: packer elements
- Hardness
- 75 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 | 75 | 70 to 80 | Shore A | ASTM D2240 / ISO 48-4, 1 s |
| Specific gravity | 1.22 | ±0.02 of approved value | ASTM D297 / ISO 2781 | |
| Tensile strength | 24 | min 20 | MPa | ASTM D412 die C / ISO 37 type 2 |
| Elongation at break | 380 | min 300 | % | ASTM D412 die C / ISO 37 type 2 |
| Modulus at 100 % | 4 | 3 to 6 | MPa | ASTM D412 die C / ISO 37 type 2 |
| Tear strength | 50 | min 40 | kN/m | ASTM D624 die C |
| Compression set, 70 h at 150 °C | 35 | max 45 | % | ASTM D395 method B, button |
| TR10 | -24 | max -20 | °C | ASTM D1329 / ISO 2921 |
| IRM 903, 70 h at 150 °C, volume change | +8 | max 15 | % | ASTM D471 / ISO 1817 |
| Heat ageing 70 h at 150 °C, hardness change | +5 | 0 to 8 | points | ASTM D573 / ISO 188 |
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 |
|---|---|---|---|
| Packer element test | API 11D1 / ISO 14310, with a packer OEM | Validation grade V3 or V1 (to be confirmed) on the OEM design | Planned |
| Completion brine ageing | In-house method, published with results | CaCl2 / CaBr2 brines, 168 h at 150 °C | Planned |
| Sour ageing and life prediction | ISO 23936-2 Annex A / NORSOK M-710 | Sour multiphase fluid (hydrocarbon liquid, water, gas with H2S) at three temperatures; Arrhenius extrapolation to service temperature | 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