... , silicone or rubber (NR, SBR, NBR, EPDM, FR and more) 2. Any colour and size are availa 1. Material: comply to RoHS ... , silicone or rubber (NR, SBR, NBR, EPDM, FR and more)2. Any colour and size are available.3. Meet ROHS directive.4 ... ,oil and gas machines, water,etc.8. According to your 2D,3D drawings or samples9. OEM and ODM orders are welcome fluororubbe O ring ...