Swivel joint is used to be a channel for the hydraulic fluid going to the travel motor.

It has many other names, including rotary manifold, rotary union, center swivel, and center joint.

It's important part of the machine.

If there is oil leak in the swivel joint, the travel motor will loss power.

So when the travel motor acts without power, you should take it into consideration too that whether it ‘s the problem of swivel joint, and to change swivel join seal kits..

Seal kit is the top-priority main product for the one we supply.

During the past 10 years, Sonka company build a developing list for the formula for the seal kits from the ground. 

now we have most data information about the excavator seal kits for the brand Komatsu Hyundai Kobelco DOOSAN Excavators. And next step is for the Volvo loaders, Komatsu loaders, and bulldozers.
And for the others step by step.

Now Sonka company has its two own brand seals developed "HQPA" & "SUNCAR" on launching.

Sonka company is becoming better and better to provide better service to customers.

FAQ

Q1. What is your terms of packing?

A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.

Q2. What is your terms of payment?

A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Q3. What is your terms of delivery?

A: EXW, FOB, CFR, CIF.

Q4. How about your delivery time?

A: Generally, it will take 20 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

Q5. Can you produce according to the samples?

A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q6. Do you test all your goods before delivery?

A: Yes, we have 100% test before delivery

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