Product Description
🔧 Fix Rod-Side Hydraulic Leaks – LC01V00070R200C Rear Seal Kit
If your Kobelco SK350HDLC-8 or SK330HDLC-8 excavator is leaking hydraulic oil from the gland end (where the chrome rod enters the bucket cylinder), the rear seal kit is what you need.
The LC01V00070R200C is the dedicated rear / head seal kit for the bucket cylinder. It replaces all seals inside the cylinder gland (end cap), stopping external rod leaks and restoring proper cylinder function.
⚠️ Important distinction from LC01V00070R100C:
R100C = Full cylinder kit or piston kit (internal)
R200C = Rear / gland end seal kit (rod side)
Make sure you order the correct kit based on where your leak is.
✅ Key Features
Feature Detail
Part number LC01V00070R200C
Kit type Rear / head / gland seal kit
Hole count 14 Holes (piston configuration – for fitment verification)
Compatible models Kobelco SK350HDLC-8, SK330HDLC-8
Cylinder position Bucket cylinder (gland end)
📦 What’s Included in the Rear Seal Kit
This kit contains all seals required to rebuild the cylinder head / gland:
Rod seal (main high-pressure seal)
Wiper seal (dust scraper)
Buffer seal (backup for rod seal)
O-rings for the gland (outer diameter sealing)
Back-up rings (to prevent o-ring extrusion)
Not included (in this rear kit): Piston seals, wear rings, or cylinder tube seals. Those are in the full kit (R100C).
🛠️ Material & Quality
Rod seal: Polyurethane (PU) – extreme wear resistance
Wiper: Double-lipped polyurethane – keeps dirt out
O-rings: NBR70 (Nitrile) – excellent oil compatibility
Temperature range: -30°C to +110°C (-22°F to +230°F)
Pressure rating: Up to 350 bar (5075 psi)
All seals meet or exceed OEM specifications for Kobelco hydraulic systems.
🔍 Compatibility Check – 14 Holes Version
Specification Detail
Machine model Kobelco SK350HDLC-8
Machine model Kobelco SK330HDLC-8
Cylinder type Bucket cylinder
Piston holes 14 (confirm before buying)
Kit location Rear / gland / head end
⚠️ How to verify 14 holes: Remove the bucket cylinder piston. Count the bolt holes on the piston face. If you see 14 holes, this rear kit is compatible for the gland end.
Does R200C fit SK330LC-8 (non-HDLC)?
No – the standard SK330LC-8 uses a different bucket cylinder. Only for HDLC-8 models.
🚨 When Should You Replace the Rear Seal Kit?
Replace the LC01V00070R200C rear seal kit immediately if you notice:
✅ Oil dripping from the front of the bucket cylinder (between rod and gland)
✅ A shiny film of oil on the chrome rod after wiping clean
✅ Visible scoring or scratches on the rod surface (replace rod separately if damaged)
✅ Loss of bucket holding force (but less likely – that’s usually piston seals)
📌 If your bucket drops slowly under load, you likely need the full cylinder seal kit (R100C). If oil leaks externally from the gland, you need this R200C rear kit.
🔧 Installation Tips
Disassemble cylinder – Remove the gland nut or retaining ring
Remove old seals – Inspect the gland for scratches or burrs
Clean thoroughly – Use hydraulic oil, never solvents that damage seals
Lubricate new seals – With clean hydraulic oil before installation
Install in correct orientation – Follow included diagram (rod seal lip faces pressure side)
⚠️ Common mistake: Installing the rod seal backward causes immediate leakage. The included diagram shows correct lip direction.
📞 Need installation help? We provide free phone/WhatsApp support for verified buyers.
📋 Comparison: R100C vs R200C for Kobelco Bucket Cylinder
Feature LC01V00070R100C LC01V00070R200C
Kit type Full or piston kit Rear / gland seal kit
Includes piston seals? Yes No
Includes rod seal? Yes Yes
Includes wiper? Yes Yes
Includes wear rings? Typically yes No
Best for Internal bypass / full rebuild External rod leak
Hole count verification 14 holes (piston) 14 holes (for compatibility only)
🚀 Shipping & Warranty
Processing time: 1-2 business days
Carriers: DHL Express / FedEx / UPS (tracking provided)
Worldwide delivery: 3-7 business days typical
Warranty: 12 months against manufacturing defects
❓ Frequently Asked Questions
Q: Can I buy just the rod seal separately?
A: No – we only sell the complete R200C kit. Individual seals are not recommended because o-rings and back-up rings should be replaced together.
Q: My cylinder has 12 holes, not 14. Will this fit?
A: No. The 12-hole version uses a different gland design. Please contact us with your original part number.
Q: Is this an OEM Kobelco part?
A: Aftermarket premium quality. Manufactured to exact dimensions of the original Kobelco seals. No branding or original packaging.
Q: How many R200C kits do I need for one bucket cylinder?
A: One kit per cylinder. Each bucket cylinder has one gland end.
Q: Do I also need R100C?
A: Only if you have internal leakage (bucket drops when lifted). For external rod leaks only, R200C is sufficient.
📞 Need Help Identifying the Correct Kit?
Send us the following information for verification
