Product FAQ
Service FAQ


Quick response

TBM has professional sales in charge of their own country that will response within 10minutes on online chat or via email. Customers can send quick quote through online chat. It will greatly increase efficiency. 


TBM has more than 3000 spares in stock that can meet 60% of client needs. We will check the stocks when customer is urgent for some seals so that they can get urgent seals in a short period. The fastest delivery time of standard seals is 7 days.

Quality Guarantee

Our inspection facility ensures all incoming products conform to specified requirements. Through the sealing ring flatness detection, roughness testing, spring pressure testing and testing equipment, to ensure that each set of mechanical seal is 100% qualified. We also can provide free samples of conventional products according to you needs, to make your purchase more assured.TBM takes responsibility for changing or refunding for those products with quality problems.1) Sending the wrong size or material products.2) Seal face that has chips..3) Products broken during the delivery.4) Seal face is not flat.5) Rubber is rough.

Customized products

TBM supplys customized products according to customer’s sample or drawing. We have specialists who can make drawing according to customer’s request. When order is confirmed, we will check with customer again in case to avoid any mistakes.


TBM provides free sample according to customer’s request. We keep many standard mechanical seals in stock which can delivery in a short period.

What is considered good life for a mechanical seal?

①The only part of a mechanical seal that is supposed to be sacrificial is the carbon face. The seal should run leak free until the carbon face is worn away. If the seal leaks for any other reason we consider it a premature failure and always correctable.②Two hard faces are selected when carbon is not acceptable in the application and you have run out of options. You are then trying to get the longest life you can.③The only variable in seal life should be the lubricating quality of the of the product you're sealing. Hot water, many gases and most solvents are typical non-lubricants.④With all of that said, the fact is that in excess of eight-five percent of mechanical seals fail prematurely. When seals are remove from the running pump most of the carbon face is still intact. Little face wear is the rule not the exception.

What is a mechanical seal and how does it work?

Mechanical seals are devices that control the leakage of fluid between a rotating shaft and the pressurized casing on rotating equipment. Mainly applications include centrifugal pumps, reactors, mixers and compressors. Originally developed to overcome gland packing-type seal limitations, modern seals are designed to reduce emissions and improve rotating equipment performance.


TBM has full series of spare parts in stock. Our spare parts can be quickly configured with 10 million permutations that can meet 60% engineering application based on over 3,000 pcs stock. 

How long has TBM been in business?

TBM has concentrated on designing and producing mechanical seals for more than 10 years, cooperated and served with 26 countries, more than 100 customers all over the world. TOPBON is delicated to not only offer the products but also the comprehensive service.