Description
Product Details
| Seal Kit | 3402686 |
| Brand | CAT |
| Rod Diameter | 63.5 mm (existing listing; verify with cylinder group) |
| Bore Diameter | 139.4 mm (existing listing; verify with cylinder group) |
| Product Type | Hydraulic Cylinder Seal Kit |
| Application / Fitment Status | Exact cylinder group, cylinder position and compatible machine models are not yet confirmed. Verify by machine serial number before ordering. |
| CAT Official Catalog Identity | CAT confirms 340-2686 is a Hydraulic Cylinder Seal Kit — Standard Size. CAT states that application is specific to a cylinder-group part number. |
| CAT Official Part Details | CAT-listed kit components: 175-7905 O-ring (1); 225-3281 double-lip wiper seal, 61.42 mm ID (1); 289-2937 buffer seal assembly (1); 289-2948 cylinder-rod U-cup seal, 62.78 mm ID (1); 2K-2961 rubber backup ring, 132.73 mm ID (1); 495-8215 two-piece seal, 139.75 mm bore (2); 4J-4606 plastic ring, 139.70 mm OD (1). |
| CAT-Compatible Models | Track-type tractor: D5H. Wheel tractor: 627B, 621B, 623B. Track loader: 951B, 955K, 955L. Landfill compactor: 826C. Wheel loader: 950. |
Source: CAT Parts Store — 3402686. Confirm fitment against the exact machine serial number and cylinder-group part number.