This spring plunger has a stainless steel body, with a stainless steel bead, and a spring in spring steel class D.
During our manufacturing process, spring resistance is controlled by electronic and optical measurement devices.

Spring plunger in stainless steel
| Spring force | ||||||||||
| initial pressure | final pressure | |||||||||
| D+0.08 | D1 | D2 | L | L1 | H | F1(approx. N) | F2(approx. N) | Reference | |
Pack |
| 4 | 3 | 4,6 | 5 | 1 | 0,8 | 3 | 7 | 8537i | 0,3 | 50 pcs |
| 5 | 4 | 5,6 | 6 | 1 | 1 | 4 | 7 | 8538i | 0,6 | 50 pcs |
| 6 | 5 | 6,5 | 7 | 1 | 1,5 | 6 | 12 | 8539i | 1,0 | 50 pcs |
| 8 | 6,5 | 8,5 | 9 | 1 | 1,8 | 6 | 12 | 8540i | 2,0 | 50 pcs |
| 10 | 8 | 12 | 13,5 | 2,5 | 2,7 | 10 | 20 | 7890i | 6,0 | 25 pcs |
| 12 | 10 | 14 | 16,0 | 2,5 | 3,5 | 15 | 25 | 7891i | 10,0 | 25 pcs |