Quick answer: the top-ranked mechanical seal brands in China on this list are COLOSSUS (Liaoning), Lan Tian Ji Xie Mi Feng (Zhejiang) and Mi You (Jiangsu). 5 Chinese brands are ranked by registration, contact and product data; 10 companies are listed in total. Updated 21 Oct 2026.
Ranked mechanical seal brands
How this list is ranked- 01
COLOSSUS
克隆COLOSSUS
- Mechanical seals
- Magnetic drive pumps
Registered legal entity on file; email and phone published; operating since 1988.
View profile → - 02
Lan Tian Ji Xie Mi Feng
兰天机械密封
- Mechanical seals
Registered legal entity on file; email and phone published; operating since 1988.
View profile → - 03
Mi You
密友
- Mechanical seals
Registered legal entity on file; email and phone published; operating since 1985.
View profile →
- 04
YH 永华YH
Registered as 西安永华集团有限公司 in 1998.
- Mechanical seals
Why it ranks here: registered legal entity on file; email and phone published; operating since 1987.
- 05
Zhong Mi Kong Gu 中密控股
Registered as 中密控股股份有限公司 in 1993.
- Mechanical seals
Why it ranks here: registered legal entity on file; email and phone published; operating since 1978.
International mechanical seal brands in China
Foreign-owned groups with Chinese manufacturing or sales companies. Listed separately so the ranking above covers Chinese manufacturers only.
- INT
FLOWSERVE FLOWSERVE福斯
Registered as 福斯(上海)流体设备有限公司 in 2001.
- Mechanical seals
- Control valves
- Imported valves
- Plug valves
- Valve positioners
- Motorized valves
Why it ranks here: registered legal entity on file; phone published.
- INT
AESSEAL AESSEAL安易斯
Registered as 安易斯密封(宁波)有限公司 in 2001.
- Mechanical seals
- Gland packing
Why it ranks here: registered legal entity on file; email and phone published; operating since 1981.
More Mechanical seals brands and companies
| Brand | Registered company | Website | Email / phone |
|---|---|---|---|
| Yi Tong Mi Feng一通密封 | 成都一通密封股份有限公司 | cdytseal.com | 028-84846471 |
| EB伊格尔博格曼EB | 上海博格曼有限公司 | — | — |
| John CraneJohn Crane约翰克兰 | 约翰克兰(天津)有限公司 | — | — |
Comparison table
| # | Company | Province | Est. | Registered company |
|---|---|---|---|---|
| 01 | COLOSSUS克隆COLOSSUS | Liaoning | 1988 | 丹东克隆集团有限责任公司 |
| 02 | Lan Tian Ji Xie Mi Feng兰天机械密封 | Zhejiang | 1988 | 浙江兰天机械密封件有限公司 |
| 03 | Mi You密友 | Jiangsu | 1985 | 密友集团有限公司 |
| 04 | YH永华YH | Shaanxi | 1987 | 西安永华集团有限公司 |
| 05 | Zhong Mi Kong Gu中密控股 | Sichuan | 1978 | 中密控股股份有限公司 |
Frequently asked questions
How many mechanical seals manufacturers and suppliers in China are listed here?
10 companies are listed for mechanical seals (机械密封). 5 Chinese manufacturers have full profiles and are ranked; 2 international brands with China operations are listed separately.
Where are China's mechanical seals manufacturers located?
Among profiled companies: Zhejiang (2), Liaoning (1), Jiangsu (1), Shaanxi (1), Sichuan (1).
How is this list ranked?
By the completeness and verifiability of each company's data: a registered legal entity, an official website, published contact details, a product range and company history. The rank is not a quality rating, and no company pays for its position. See How we rank for the full method.
How do I contact these manufacturers?
Each listing shows the company's official website and, where published, its email and phone number. Of the 10 companies listed, 8 have an official website and 6 publish an email address.