Question 1

What are the different types of oil seals?

Accepted Answer

Oil seals come in various designs to suit different applications:
Single-lip seals: Feature a single sealing lip, primarily used to retain lubricant.
Double-lip seals: Include an additional lip to provide extra protection against contamination.
Springless seals: Lack a spring ring and are suitable for low-speed, low-pressure applications.
Dual seals: Prevent the mixing of two different fluids through bidirectional sealing.

Question 2

How to Select Hydraulic Seals and Oil Seals?

Accepted Answer

Evaluate your system requirements including pressure, motion type, fluid, speed, and environment to determine whether to select a hydraulic seal or an oil seal. The correct choice ensures reliable sealing performance and a long service life.For example: reciprocating versus rotary motion, pressure ratings, fluid compatibility, speed and friction, and whether the operating environment is heavily contaminated.

Question 3

What is the best material for hydraulic seals?

Accepted Answer

Commonly used materials include Nitrile (NBR), Polytetrafluoroethylene (PTFE), and Fluorocarbon rubber (FKM). PU offers abrasion resistance, PTFE provides good chemical compatibility, while FKM is suitable for high-temperature systems.

Question 4

What are the typical application scenarios for hydraulic seals?

Accepted Answer

Given that hydraulic seals are critical to the operational efficiency of hydraulic systems, their scope of application spans a wide array of industries. The sectors served by hydraulic seals include aerospace manufacturing, agriculture, automotive manufacturing, chemical processing, defense contracting, food processing, marine manufacturing, medical and pharmaceutical R&D, nuclear energy, the paper industry, and waste management.
The specific application scenarios for hydraulic seals are just as

Question 5

Do you offer customized sealing solutions?

Accepted Answer

Yes. To provide professional solutions, we first need to gain a deep understanding of your specific application scenarios and corresponding requirements. With the right product selection, operators across various industries can achieve reliable and efficient sealing results. During the seal selection process, an experienced and trustworthy hydraulic expert and supplier will serve as your invaluable partner. For more information, please feel free to contact Hankai!

Question 6

What payment methods do you accept?

Accepted Answer

We accept T/T (30% down payment, 70% balance payable against copy of bill of lading), irrevocable sight letter of credit, Western Union, Visa card, and PayPal.

Question 7

What is the normal lead time for product orders?

Accepted Answer

The average lead time for prototypes/first samples is 2-3 days; if tooling is involved, this will be negotiated separately; product delivery time mainly depends on the quantity.

Question 8

What is your standard packaging?

Accepted Answer

Each product is individually wrapped in plastic; subsequently, they are packed into cartons, which are then wrapped in an outer layer of plastic film. Finally, all goods are boxed and stacked onto pallets. We also accommodate special packaging requests if needed. To ensure customers receive products in perfect condition, we carefully inspect the packaged items.

Question 9

Can you accept trial orders/small quantity orders?

Accepted Answer

Yes, we can accept small-batch orders initially to help you gradually develop the market. We can provide you with product models that are best-sellers in your target market.

Question 10

What services do you provide?

Accepted Answer

If you wouldn't mind, please let us know your role whether you are a manufacturer, wholesaler, purchasing agent, or distributor. We will tailor our professional services to meet your specific needs. If you are ever dissatisfied with our service, please feel free to let us know directly via email or telephone. We are here to answer any questions you may have.