Our industrial rubber o‑ring serves as one of the most widely adopted sealing elements across global machinery industries. With simple circular cross‑section geometry, this o‑ring seal performs well for both static assembly sealing and low‑stroke dynamic reciprocating applications. It effectively blocks liquid and gas leakage, lowers maintenance frequency and reduces unexpected downtime for equipment.

As an experienced o‑ring supllier, we deliver both standard off‑the‑shelf sizes and custom‑made solutions. Different base rubbers are selected to match pressure, temperature and chemical media of your working environment. Every batch goes through dimensional inspection and material performance testing to guarantee consistent quality for wholesale buyers.

NBR is the cost‑effective choice for general‑purpose sealing. It offers good oil‑resistance and wear‑resistance against hydraulic oils, lubricants and fuels. This material works reliably within moderate temperature ranges, popular for hydraulic cylinders, pneumatic tools and mechanical spare‑part replacement. Large‑volume wholesale orders are supported.

EPDM stands out in water, steam and outdoor exposure conditions. It features excellent ozone and UV aging resistance, making it suitable for water treatment systems, pipeline assemblies and outdoor equipment. Avoid using it with mineral‑based oils for long‑term service.

Silicone performs excellently under wide high‑low temperature fluctuations. Non‑toxic grades are available for food‑contact and medical‑related equipment. This material is soft and elastic, commonly used in household appliances, lab instruments and sanitary processing machinery. It is not recommended for heavy‑duty oil‑immersed working conditions.

FKM (Viton) belongs to high‑performance fluororubber. It handles high temperature, strong solvents and corrosive chemicals that ordinary rubber cannot withstand. It is widely used in chemical processing, engine systems and high‑precision hydraulic facilities where sealing reliability is critical.

These o‑ring seals fit a broad scope of industrial equipment.

We can adjust hardness, dimension and compound formula according to your operating pressure, temperature and contact medium.

Q: What is a rubber o‑ring used for? A: An o‑ring is a circular sealing component used to prevent liquid or gas leakage. It works for static joints as well as limited‑travel dynamic sealing in hydraulic, pneumatic and many other mechanical systems.

Q: How do I choose the right o‑ring material? A: Material selection depends on working temperature, pressure and contacting media. NBR for oil‑rich general conditions; EPDM for water and outdoor environment; silicone for sanitary wide‑temperature scenarios; FKM Viton for high‑temperature and chemical‑corrosive conditions.

Q: Can you produce custom‑size o‑rings? A: Yes. We support custom inner diameter, outer diameter, cross‑section and special rubber compounds. Both small‑batch prototyping and large wholesale orders are acceptable. Send us your drawing or size specifications for quotation.

Whether you need standard spare‑part o‑rings or custom‑developed sealing parts for special machinery, our engineering team can provide material suggestion and technical support. Contact us to get your free quotation.