FAQ | Lepu Mechanical Seal Manufacturer In China

What package used for the mechanical seal?

We use soft plastic bubble to +carbon box, protect the seal 100% for the delivery.

Can I print my own brand logo on the package box?

Yes, we can print your own brand logo on the package box, that will need extra cost depends on how many pcs you need.

How to get the mechanical seal catalog?

Please contact us by email: mark@lepuseal.com, we will send our latest mechanical seal catalog to you.

How can I get the seal if I place order?

We will send seals by air or sea, normally send by air like DHL ,FEDEX or TNT.

How can I get a sample from you?

We offer free sample some mechanical seals, clients need to pay the shipping cost, please contact our sales to get help.

How long is the delivery time?

That depends on what seal item you need, some seal we keep stock and can deliver the seal in 1-2days, some have to make new seals, that will take around 20-30days. Please contact our sales, they will check the exactly delivery time.

How do I purchase your goods?

please contact our sales, and tell them the seal item number and quantity you need, they will send you a proforma invoice to you, after you send the payment, we will start production for your mechanical seal order.

If I just have pump number, how can I know which mechanical seal fit which pump?

Please contact our sales, they will check for you, we have many data for pump and mechanical seal. And please try your best to offer pictures or seal number to us, that help to save lots of time for checking the mechanical seal items.

Where can I get professional suggestion when I looking for some mechanical seal?

Lepu seal is a professional manufacturer for mechanical seal since 1998, we can offer professional suggestion for the mechanical seal.

How to choose the rubber part for a mechanical seal?

Different rubber working for different medium, NBR is a popular and cheap rubber material, normally working for clean water and not too high temperature, if working for some chemical medium, better choose epdm or viton, and if working for high temperature, then viton is a better material.

How to choose the materials for mechanical seals?

There are some rules when choosing the materials for a mechanical seal. For example, we use ceramic as the material for stationary seals, carbon for the seal face, and NBR for the O-ring. Be careful when you use hard material for both rotary and stationary seal face. The temperature will be very high when mechanical seal runs, so make sure you have equipped cooling system for your mechanical seal. If not, the rubber parts of the mechanical seal will be get burnt soon.

What are the materials for the surface of the seal finish?

The materials for rotary seal parts commonly include carbon, ceramic, SIC, and tungsten carbide. Carbon, ceramic, SIC, and TC are usually adopted for the stationary seal ring. Secondary seal part is always made of rubbers.

What is a mechanical seal?

A mechanical seal is a spare part that helps connect systems or mechanisms together by preventing leakage (e.g. in a pump), generating pressure, or excluding contamination. The effectiveness of a seal is dependent on adhesion of the sealants and compression of the gaskets. Normally, a mechanical seal includes rotating parts and stationary seal parts with secondary seal part like o-ring. Besides that, the material for secondary seal is usually rubber, like NBR, BUNA, EPDM or VITON (FKM).

What is soft material and hard material for a mechanical seal? How to match?

The soft material is carbon, and Silicon carbide , tungsten carbide, ceramic is hard material.

What any after-sale service?

If any quality problem from factory, we offer new seals to our clients.

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Guangzhou Lepu Machinery Co., Ltd.
ADD.: No. 5, Yunkai Road, Huangpu District, Guangzhou, China.
TEL.: +86-020-36158139, +86-020-36158280
Contact Person: Mr. Mark Ao
E-mail: mark@lepuseal.com;amy@lepuseal.com
FAX.: +86-020-36158281
SKYPE: lepu-seal
Whatapps: +86-18903009893

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