Engineered for extremes
HNBR BOP 85P
Read the code: HNBR, BOP duty (blowout preventers), 85 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.
An 85 Shore A HNBR for blowout preventer ram packers, top seals, bonnet seals and bonded seals: high tear strength, strong rubber-to-metal bonding, and resistance to drilling fluids, sour gas and RGD.
- Polymer class
- HNBR
- Duty
- BOP: blowout preventers
- Hardness
- 85 Shore A
- Temperature range
- -20 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 | 85 | 80 to 90 | Shore A | ASTM D2240 / ISO 48-4, 1 s |
| Tensile strength | 22 | min 18 | MPa | ASTM D412 die C / ISO 37 type 2 |
| Elongation at break | 300 | min 220 | % | ASTM D412 die C / ISO 37 type 2 |
| Tear strength | 48 | min 40 | kN/m | ASTM D624 die C |
| Compression set, 70 h at 150 °C | 25 | max 35 | % | ASTM D395 method B, button |
| TR10 | -25 | max -22 | °C | ASTM D1329 / ISO 2921 |
| Bond to steel | 9 | min 7, rubber failure | kN/m | ASTM D429 method B (90° peel) |
| IRM 903, 168 h at 150 °C, volume change | +8 | max 15 | % | ASTM D471 / ISO 1817 |
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 |
|---|---|---|---|
| Drilling fluid ageing | In-house method, published with results | Water-based and oil-based mud at rated temperature | Planned |
| BOP elastomer requirements | API 16A, design verification with an OEM | On the OEM's ram and packer designs | Planned |
| Rapid gas decompression | ISO 23936-2 Annex B / NORSOK M-710 | 90/10 CH4/CO2, 15 MPa, 100 °C, 8 cycles, about 2 MPa/min decompression; 5.33 mm and 6.99 mm sections; target rating 0000 to 1111 (0 to 3 passes) | 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