Open Access
Table 2
Compound formula of pipette shaft seal ring.
| Rubber material | NBR | Zinc oxide | stearic acid | Antioxidant RD | Antioxidant MB | Spray carbon black | HAF |
|---|---|---|---|---|---|---|---|
| PHR | 100 | 5 | 1 | 1 | 1 | 40 | 55 |
| Rubber material | DBP | Dibutyl sebacate | DCP | Accelerator CZ | Accelerator M | Sulphur | Total |
| PHR | 10 | 15 | 2 | 1.5 | 0.5 | 0.3 | 232.3 |
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