HEF-2 (High Energy Fuel)
What is the nitrile (nbr) for HEF-2 (High Energy Fuel)?
For HEF-2 (High Energy Fuel), nitrile (nbr) is 2; epdm is 4; neoprene (cr) is 4; sbr is 4; silicone (vmq) is 4; butyl (iir) is 4; polyacrylate (acm) is 4; hypalon (csm) is 4; viton (fkm) is 1; polyurethane (au/eu) is 4; fluorosilicone (fvmq) is 2; aflas (tfe/p) is X; kalrez (ffkm) is 1; rating scale is 1 = Satisfactory, 2 = Fair, 3 = Doubtful, 4 = Unsatisfactory, X = Insufficient Data, verified against its source on 2026-09-18.
HEF-2 (High Energy Fuel) | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | 2 | X | 1 |
— mykin.com, retrieved 2026-08-12
- Chemical
- HEF-2 (High Energy Fuel) verified
- Nitrile (NBR)
- 2 verified
- EPDM
- 4 verified
- Neoprene (CR)
- 4 verified
- SBR
- 4 verified
- Silicone (VMQ)
- 4 verified
- Butyl (IIR)
- 4 verified
- Polyacrylate (ACM)
- 4 verified
- Hypalon (CSM)
- 4 verified
- Viton (FKM)
- 1 verified
- Polyurethane (AU/EU)
- 4 verified
- Fluorosilicone (FVMQ)
- 2 verified
- Aflas (TFE/P)
- X verified
- Kalrez (FFKM)
- 1 verified
- Rating scale
- 1 = Satisfactory, 2 = Fair, 3 = Doubtful, 4 = Unsatisfactory, X = Insufficient Data verified
Where each value comes from
The value above is stated away from the sentence quoted with the answer, so the passage that states it is shown here too.
Rating scale
LEGEND: 1 = Satisfactory, 2 = Fair, 3 = Doubtful, 4 = Unsatisfactory, X = Insufficient Data
— all from mykin.com, retrieved 2026-08-12
Source
- mykin.comhttps://mykin.com/rubber-chemical-resistance-chart-3