| MATERIALS GS30-GS240 |
| Pos | Denomination | Q.ty | Material |
| 1 | Cylinder | 1 | Stainless steel |
| 2* | Cap o-ring | 2 | Nitrilic rubber |
| 3 | Shaft | 1 | Stainless steel |
| 4 | Screw | 6 | Stainless steel |
| 5 | Cap | 2 | Stainless steel |
| 6 | Spring loading screw | 2 | Stainless steel |
| 7 | Nut | 2 | Stainless steel |
| 8 | Spring cap | 2 | Steel alloy |
| 9 | Spring | 2 | Steel alloy |
| 10 | O-ring | 2 | Nitrilic rubber |
| 11 | Seeger | 1 | Steel alloy |
| 12 | Washer | 1 | Steel alloy |
| 13 | Lower support bush | 1 | Acetalic resin |
| 14 | Upper support bush | 1 | Acetalic resin |
| 15 | Lower shaft support | 1 | Acetalic resin |
| 16 | Upper shaft support | 1 | Acetalic resin |
| 17 | Scotch yoke | 1 | Steel alloy |
| 18 | External elastic pin of yoke | 1 | Steel alloy |
| 19 | Internal elastic pin of yoke | 1 | Steel alloy |
| 20 | O-ring upper sealing shaft | 1 | FKM |
| 21 | O-ring low sealing shaft | 1 | FKM |
| 22 | Piston | 2 | Aluminium alloy |
| 23* | Piston's support | 4 | P.T.F.E. carbo-graphite filled
|
| 24* | Dynamic seal | 2 | Polyurethane |
| 25 | Rotative sleeve | 2 | Steel alloy |
| 26 | Bush | 2 | Steel alloy |
| 27* | Piston o-ring | 2 | Nitrilic rubber |
| 28 | External support o-ring | 1 | Acetalic resin |
| * Components of spare part kit |