1. Rubber Bellow seal R13 for pumps,equals to Johncrane 10T,10R 2. Our seals can replace the original seals. 3. We always keep balance both on Price and Quality. Brand: sealcon Performance Capabilities l Temperature: -20 to 200, dependent on the elastomer l Pressure: Up to 6 bar l Speed: Up to 10 m/s l End play/axial float allowance ±0.1mm Sizes 3/8�, 1/2�, 5/8�, 3/4�, 7 Materials Combination l Face: Carbon, SiC, TC l Seat: Ceramic, SiC, TC l Bellow: NBR, EPDM, VITON etc. l Spring: SS304, SS316 l Metal parts: SS304, SS316