We are offering o rings1. It can be resistant to various types of petroleum and a variety of chemicals. 2. Various materials and hardness for your option, including nbrhnbrvitonsiliconeepdmsbr etc. 3. Color: according to customers' requirements 4. Features: - easy to install - low-cost - full size - to adapt to wide temperature range - low-friction - wear-resistant - long service life supplied size: 6.00 mm to 300.00 mm, our fabrication services, are all available to meet the unique needs of customers all around the world.