... resin, oil, pigment, additive, adhesive, foamed material, asphalt and residual oil, etc.2. Product Characteristics of Jiurun Series Gear ... materials, single lip type seal, double-lip type seal and mechanical seal can be selected. 6). Effective concept of flow ... than the commonly selected diaphragm type and plunger type metering pumps and peristaltic pumps, and more economical because equipment cost is ...