Blender sealing rings set has good sealing and reusability Good, can be used repeatedly, and practical The sealing rings of the mixer is food grade silicone, which can be used for a long time It is safe and secure to use, don ' t worry about poisonous and harmful Blender protective rings is a kitchen accessory, a good helper for cooking, very suitable for cooking lovers Real kitchen goodies This blender accessory spare parts are for blending machines your blender from unnecessary wear Small and portable, it is more to install without tools No additional tools or are required for replacement installations