logo

search
CN
+86 15168112857
heather@sealing-ring.com
Custom Precision
O-Ring and Rubber Seals
Manufacturer

Our factory is IATF16949 certified, with ISO Class-100,000 clean
rooms assembly and relubrication services.

Contact Us >
Zero leakage,
Zero Defect, Zero Deform

Our O-ring has a tolerance up to 0.01 mm

Ask a quote >
Featured
Products

HAISUN manufactures precision O-rings such as NBR, HNBR, AMQ, FKMT, EDPM, ACM, and CR, and we also supply standard O-ring parts and O-ring kits to meet our clients' needs.

Find Product →
Featured Products

HAISUN manufactures precision O-rings such as NBR, HNBR, AMQ, FKMT, EDPM, ACM, and CR, and we also supply standard O-ring parts and O-ring kits to meet our clients' needs.

Find Product →
Customizing,
designing,
and manufacturing
HAISUN has a complete manufacturing process, including mold design, rubber mixing, vulcanization molding, product inspection, packaging, and shipping. We conduct strict tests on the physical properties to assure product performance, which includes tensile strength, aging resistance, compression deformation, oil resistance, acid and alkali resistance, and ozone resistance. Thus, efficiently ensure product quality, shorten product production cycles, and gain customer trust.
OurCapabilities →
Customizing, designing,
and manufacturing
HAISUN has a complete manufacturing process, including mold design, rubber mixing, vulcanization molding, product inspection, packaging, and shipping. We conduct strict tests on the physical properties to assure product performance, which includes tensile strength, aging resistance, compression deformation, oil resistance, acid and alkali resistance, and ozone resistance. Thus, efficiently ensure product quality, shorten product production cycles, and gain customer trust.
OurCapabilities →
About Us

Setting New Standards,
Exceeding Expectations

Cixi Haisheng Rubber Products Co., Ltd. (HAISUN) is a professional manufacturer of custom rubber seals and high-precision O-rings in China. We are devoted to developing high-performance innovative materials that outperform existing standards to meet the needs of clients across a wide range of industries.

Learn More → We're a trustworthy supplier for

Markets and Applications

HAISUN specializes in O-rings for smartphones, watches, auto parts, medical devices, food machinery, electronic parts, and other industries. We implement <br/>strict quality control at every phase of rubber-sealing product manufacturing.

Learn More →
<
>

Markets and Applications

HAISUN specializes in O-rings for smartphones, watches, auto parts, medical devices, food machinery, electronic parts, and other industries. We implement <br/>strict quality control at every phase of rubber-sealing product manufacturing.

Learn More →

Why Choose Us?

The quality objective of HAISUN Life is excellence with a passion for service.

Our novel materials redefine

O-ring dimension accuracy tolerance up to 0.01mm, rubber seals accurate of tolorance up to 0.02mm. Reduced wire diameter to 0.08, reduced inner diameter to 0.14, and reduced outer diameter to 0.3 to better suited your products.

01

Safe and eco-friendly materials

Our rubber seals are manufactured following national standards, AS568, JIS, etc., with materials passing third-party certifications like ROHS, REACH, FDA, and are refined with high mold precision, free of burrs and uneven surfaces.

02

Mature processes for consistent quality

ISO Class-100,000 clean room workshop, Utilizing stable performance vulcanization units and precision CNC machining centers. We have a complete production process and testing standard to ensure product sealing and quality stability.

03

Precision testing for quality control

Precise testing instruments ensure product compliance, with strict quality control measures to prevent defective products from reaching customers. Production processes are strictly controlled, focusing on prevention, control, and traceability.

04

Enhanced services for your rapid market strategy

We use a strong supply chain management system to offer effective shipping solutions. Rapid prototyping of rubber parts allows for a much shorter product development cycle and speedier market launch.

05
  • Our novel materials redefine
    excellence
  • Safe and eco-friendly
    materials
  • Mature processes for
    consistent quality
  • Precision testing for
    quality control
  • Enhanced services for
    your rapid market strategy

Why Choose Us?

The quality objective of HAISUN Life is excellence with a passion for service.

Our novel materials redefine

O-ring dimension accuracy tolerance up to 0.01mm, rubber seals accurate of tolorance up to 0.02mm. Reduced wire diameter to 0.08, reduced inner diameter to 0.14, and reduced outer diameter to 0.3 to better suited your products.

01

Safe and eco-friendly materials

ur rubber seals are manufactured following national standards, AS568, JIS, etc., with materials passing third-party certifications like ROHS, REACH, FDA, and are refined with high mold precision, free of burrs and uneven surfaces.

02

Mature processes for consistent quality

ISO Class-100,000 clean room workshop, Utilizing stable performance vulcanization units and precision CNC machining centers. We have a complete production process and testing standard to ensure product sealing and quality stability.

03

Precision testing for quality control

Precise testing instruments ensure product compliance, with strict quality control measures to prevent defective products from reaching customers. Production processes are strictly controlled, focusing on prevention, control, and traceability.

04

Enhanced services for your rapid market strategy

We use a strong supply chain management system to offer effective shipping solutions. Rapid prototyping of rubber parts allows for a much shorter product development cycle and speedier market launch.

05

Dedicated to manufacturing
precision O-rings and Rubber Seals

Ask for a quote

Latest Updates

Keep up with the latest innovations in rubber sealing technology and novel materials from HAISUN.

HAISUN Rubber: Exploring the Types and Structures of Water Seals
01 Apr 2024

HAISUN Rubber: Exploring the Types and Structures of Water Seals

Water seals utilize V-shaped rubber suitable for rotary shafts to prevent contaminants from entering, providing dust and water resistance. So, what are...

Read More →

HAISUN: Exploring the Performance of EPDM O-Rings

EPDM O-rings can be widely used in applications such as drinking water treatment, wastewater treatment, and other oil-free environments. EPDM rubber ex...

HAISUN: Exploring the Performance Characteristics of Hydrogenated Nitrile Rubber(HNBR)

​Hydrogenated nitrile rubber(HNBR) is less commonly used compared to nitrile rubber(NBR), which is more prevalent in O-ring seals. However, due to its ...

HAISUN: Understanding the Classification of Seal Materials

Latest Updates

Keep up with the latest innovations in rubber sealing technology and novel materials from HAISUN.

HAISUN Rubber: Exploring the Types and Structures of Water Seals
01 Apr 2024

HAISUN Rubber: Exploring the Types and Structures of Water Seals

Water seals utilize V-shaped rubber suitable for rotary shafts to prevent contaminants from entering, providing dust and water resistance. So, what are...

Read More →

HAISUN: Exploring the Performance of EPDM O-Rings

EPDM O-rings can be widely used in applications such as drinking water treatment, wastewater treatment, and other oil-free environments. EPDM rubber ex...

HAISUN: Exploring the Performance Characteristics of Hydrogenated Nitrile Rubber(HNBR)

​Hydrogenated nitrile rubber(HNBR) is less commonly used compared to nitrile rubber(NBR), which is more prevalent in O-ring seals. However, due to its ...

© 2024 Cixi Haisheng Rubber Products Co., Ltd. All Rights Reserved.      

PrivacyTerms & ConditionsSitemap

© 2024 Cixi Haisheng Rubber Products Co., Ltd. All Rights Reserved.

PrivacyTerms & ConditionsSitemap