SKU SK-JD310-BKT
John Deere 310SG Backhoe Bucket Cylinder Seal Kit
completeFull service kitthreaded internal gland
3 in bore, 1.75 in rod. Internally threaded gland — you need a spanner, not a strap wrench.
What's in this kit
Every seal in the kit, with its material and size.
| # | Qty | Part | Material | ID | OD / cross-section | Height | Shore A |
|---|---|---|---|---|---|---|---|
| 1 | 1 | Rod sealRS-1750-2250-313 · polypak | Polyurethane | 1.75" (44.45 mm) | 2.25" (57.15 mm) | 0.313" (7.95 mm) | 90 |
| 2 | 1 | Buffer sealBS-1750-2250-250 · buffer | PTFE / NBR | 1.75" (44.45 mm) | 2.25" (57.15 mm) | 0.25" (6.35 mm) | — |
| 3 | 1 | WiperWP-1750-2125-250 · dust wiper | Polyurethane | 1.75" (44.45 mm) | 2.125" (53.98 mm) | 0.25" (6.35 mm) | 90 |
| 4 | 1 | Rod bushingRB-1750-1875-375 · guide band | Bronze-filled PTFE | 1.75" (44.45 mm) | 1.875" (47.63 mm) | 0.375" (9.53 mm) | — |
| 5 | 1 | Piston sealPS-2250-3000-375 · t-seal | Polyurethane | 2.25" (57.15 mm) | 3" (76.2 mm) | 0.375" (9.53 mm) | 90 |
| 6 | 1 | O-ringOR-2250-139 · energizer | Nitrile (NBR) | 2.25" (57.15 mm) | 0.139" (3.53 mm) | — | 70 |
| 7 | 2 | Wear ringWR-2750-3000-500 · guide band | Bronze-filled PTFE | 2.75" (69.85 mm) | 3" (76.2 mm) | 0.5" (12.7 mm) | — |
| 8 | 1 | O-ringOR-3125-139 · gland seal | Nitrile (NBR) | 3.125" (79.38 mm) | 0.139" (3.53 mm) | — | 90 |
| 9 | 2 | Backup ringBU-3125-3400-50 · backup | Nylon | 3.125" (79.38 mm) | 3.4" (86.36 mm) | 0.05" (1.27 mm) | — |
Cylinders this kit services
John Deere 310SG Backhoe Bucket Cylinder
- OEM no.
- AT310100
- Bore
- 3" (76.2 mm)
- Rod
- 1.75" (44.45 mm)
- Stroke
- 24.5" (622.3 mm)
- Gland
- threaded internal
- Port
- SAE ORB #8
- Rod eye
- plain bore
What this fits
| Machine | Serial range | Position |
|---|---|---|
| John Deere 310SG · SG Series | All serials | Bucket / Curl |
Our kits are dimensional equivalents built from seals we buy in. They fit and replace the original. They are not OEM parts and carry no OEM branding.
Not finding it?
Not sure this is right?
Check it with a caliper before you buy — how to measure bore, rod and stroke covers the mistakes behind most wrong orders. Send us the numbers and a photo of the old seals and we’ll confirm the fit before you spend anything.
Request a kit