Our rubber O‑rings are circular elastomeric sealing components for static and limited‑stroke dynamic sealing, preventing liquid and gas leakage across hydraulic, pneumatic, chemical, food processing and general machinery systems.

We supply standard O‑rings in common sizes and custom O‑rings made to your drawings or samples. Available materials include NBR, FKM(Viton), HNBR, EPDM and food‑grade silicone. As an experienced o‑ring supplier, we deliver both off‑the‑shelf stock items and OEM custom solutions for global distributors, equipment repair shops and manufacturers.

Key Features

✅ Multiple material options to match different media, temperature and pressure requirements 

✅ Standard sizes in stock; custom ID, OD and cross‑section available 

✅ Food‑grade silicone O‑rings with FDA‑compliant material for sanitary applications 

✅ Good compression set resistance, stable sealing performance for long service life 

✅ Factory direct wholesale, support small batch trial orders and mass OEM production 

✅ Easy installation and replacement

Applications

• Hydraulic & pneumatic cylinders, valves and pumps
• Chemical and industrial fluid equipment
• Food & beverage sanitary processing machines
• Automotive, mining and marine machinery
• Pipeline, water treatment and outdoor equipment

Inquiry

For quotation, sample request or custom O‑ring specifications, please email us.

FAQ about Rubber O‑Rings

Q1: 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.

Q2: 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; HNBR for high‑abrasion oil‑field applications.

Q3: 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.

Q4: Is food‑grade silicone O‑ring available? A: Yes. Our food‑grade silicone O‑rings adopt non‑toxic FDA compliant raw materials, suitable for food contact and sanitary equipment. Not recommended for heavy oil immersed working conditions.

Q5: What affects the service life of O‑rings? A: Working temperature, medium chemical property, system pressure, compression amount and surface roughness of the mating hardware will affect O‑ring lifespan. We can recommend suitable material according to your working conditions.