171 visiting now: 153 USA USA flag 17 Belgium Belgium flag 4 Russia Russia flag 3 Canada Canada flag 2 UK UK flag

Highlighted Companies

Aak Used A Small Amount Money To Ease The Worries Of Brazilian Customer - China

price: 100.00 Dollar US$

Bernardo comes from a hydraulic winch manufacturer in Brazil, and has cooperated with AAK several times on non-standard customized hydraulic cartridge valves.

At the beginning of last year, Bernard company needed to purchase hydraulic flow control valves for a batch of hydraulic winches.

Due to cost pressure, the boss asked Bernard to reduce the procurement cost of hydraulic flow control valves by 10%.

This hydraulic flow control valve needs to be the same as HydraForce standard part.

After a round of sourcing, Bernard determined the manufacturer of the hydraulic flow control valve.

7 months after the sale of the hydraulic winch, a customer complained that the sealing ring of the hydraulic flow control valve was broken, resulting in leakage, which caused the hydraulic winch to rise powerlessly.

6 months after the original manufacturer replaced the sealing ring with new one, the old problem happened again.

The customer complained directly to the boss, who asked Bernard to replace all the hydraulic flow control valves within 1 month and asked the original manufacturer to bear the costs.

However, the original manufacturer could not reach an agreement.

Bernard was caught in the middle.

He was embarrassed for 2 weeks and made no progress.

The boss was very disappointed with him.

Bernard sent me an email asking about the time and cost of re producing the hydraulic flow control valves.

He wanted to pay for it himself.

According to the hydraulic flow control valve drawings he sent, I realized that maybe only replacing with durable O-ring could solve his embarrassment.

I sent him 10 O-rings for matching tests.

A week later, Bernard told me that AAK O-rings could be matched with the original manufacturer's hydraulic flow control valves.

He asked me to send 500 O-rings to Brazil as soon as possible, and he could finally have a good sleep.

Last week, Bernard sent an e-mail to express his thanks.

All these hydraulic flow control valves have been assembled with AAK O-rings.

It has been more than a year, and there has been no complaint of leakage caused by the rupture of the sealing ring of the hydraulic flow control valves.

The boss also praised him for solving big losses with small money.

AAK's O-ring has 3 strengths: no sloughing, no extrusion and wear resistance.

The material and structure of the seal ring directly affect the performance of the seal ring.

The hardness, extrusion resistance, tensile strength and deformation of the material all determine the service life of the seal ring, and the structure of the seal ring also determines the sealing effect.

AAK selects Japan's special PU polyurethane rubber sealing ring, and the lip compression of the sealing ring is strictly controlled between 15% ~ 20%.

The wear resistance and high pressure resistance of this seal ring are more than 3 times that of other nitrile rubber seals.

Most hydraulic flow control valve manufacturers choose nitrile rubber sealing ring, which is easy to be dislodged or extruded to cause wear.

For high-frequency working conditions, the durability is 9 months at most.

AAK hydraulic flow control valve, the O-ring used has 3 strengths and no leakage, you can also have a small try.

AAK HYDRAULIC CARTRIDGE VALVES (344) 2022-09-09


Company Contact:


  • Phone: +8657483008115

  • Address: Bona Business Building, No. 456 Taikang Middle Road,, Yinzhou, Ningbo, China, Ningbo , Zhejiang , China

  • Email: Email


Published date: October 7, 2022

  • Business Description: Focused on the Development and Manufacturing of Hydraulic Valves since 2006, in Ningbo China

    Since its establishment 12 years ago, 6 first-line international brand importers have placed orders with AAK for 5 consecutive years, with a re-peat order rate of 62%.

    Exported to more than 20 countries, AAK Hydraulic Valves used on "AIRCRAFT" have been supplied to Russian customers.

    68%+ of the high precision hydraulic valves exported from Ningbo Port come from AAK hydraulic valves.

Related listings



  • Customized Z Axis Height 600mm Router Cnc Machine 1212
    Customized Z Axis Height 600mm Router Cnc Machine 1212
    Machinery and transport equipment manufacture - ACCTEK China - China - September 27, 2022 - 5000.00 Dollar US$

    1) The machines’body is strong, rigid, high precision, reliable and durable. 2) Imported high precision ball screw gap, smooth movement, to ensure that the machine tools high-precision. 3) High quality Taiwan imported linear guide has much longer lif...

  • Yoyik Power Steering Pump Zyb 1816r 817 3
    Yoyik Power Steering Pump Zyb 1816r 817 3
    Machinery and transport equipment manufacture - DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD - China - September 26, 2022 - 244.00 Dollar US$

    "Power plant spare parts POWER STEERING PUMP ZYB-1816R/817-3 Dongfang Yoyik Engineering Co., Ltd is an industrial supplier based on Deyang, known as the city of heavy industry in China. We are specialized in manufacturing and trading the spare parts ...

  • Yoyik Coupling Between Motor And Booster Pump Tdh6 370 00t97
    Yoyik Coupling Between Motor And Booster Pump Tdh6 370 00t97
    Machinery and transport equipment manufacture - DONGFANG YOYIK (DEYANG) ENGNIEERING CO; LTD - China - September 26, 2022 - 524.00 Dollar US$

    "India Thermal Power Coupling between motor and booster pump TDH6-370-00T97 is provided by Dongfang Yoyik. Our company mainly offer spare parts of power unit, including thousands of types and models, for power plants, steel mills, cement mills, chemi...



Safe Trade Tips

  • Ask for business references and check them
  • Use a payment method that offers better protection for all such as Letters of credit and verified professional escrow services. Avoid payments in advance such as money transfers
  • Verify their business via their local Chamber of Commerce
  • Search the internet using their website address, their business name, their phone and fax numbers, and their email addresses to see if you can find any feedback about them.
  • Get to know more about scams and fraud to avoid: Internet Crime Complaint Center - Consumer Financial Protection Bureau
  • This site is never involved in any transaction, and does not handle payments, shipping, guarantee transactions, provide escrow services, or offer "buyer protection" or "seller certification"