... O-ring, rectangular-ring, rubber gasket, rubber washer and so on.We can make all kinds of rings with different sizes ... , O-ring and other rubber parts. You can get more information on our website and alibaba. 2) Applications: automobile, motorcycles, agricultural machinery ... , EPDM, HNBR and so on.4) OEM and ODM orders are warm welcome. 5) Our contact information as bellow. Any questions, please ...