Custom Rubber Seals & O-Rings Manufacturer

About Us

Cixi Haisheng Rubber Products Co., Ltd. (HAISUN) manufactures high-precision o-rings. Our products have a broad application in a range of industries, including smartphones, watches, auto parts, medical machinery, electronic communications, food processing, and military applications.

HAISUN Rubber, with a registered capital of 15 million, more than 150 employees, and advanced experimental equipment, can test all types of rubber material properties and product performance, including tensile strength, aging resistance, compression deformation, oil resistance, acid and alkali resistance, and ozone resistance.

Found in
1995
30 years of expertise in rubber seals
150
Employees
We grow with our people
50
million pcs
O-rings per day
up to
±0.01
mm
O-ring Tolorance

Our Strength

Precision O-Ring Production

O-ring dimensions can be accurate up to 0.01 mm.

The company has over 50 rubber vulcanizing machines and produces 50 million O-rings every day.

The products are customized according to the specific standards of customers, and the materials have passed the professional certification of ROHS, Reach, halogen-free, PAHS, FDA, and other third parties.

Certificates of Quality

Haisheng Rubber, with "quality is the first work" and "customer satisfaction is our honor" as our eternal goal has passed IATF16949:2009 quality management system, IS014001:2015 environmental management system, and ISO45001:2018 occupational health and safe management system, weapons and equipment quality management system certification.

The company has a leading 100,000-class dust-free workshop in the industry to ensure the production of high-quality O-rings.

Occupational Health and Safety Management System Certification
Environmental Management System Certificate
Certificate of Quality Management System Certification for Weaponry
Qualification Certificate

Our Strength

Precision O-Ring Production

Certificates of Quality

The company has a leading 100,000-class dust-free workshop in the industry to ensure the production of high-quality O-rings.

+86 15168112857