| 摘要 |
PROBLEM TO BE SOLVED: To provide a plunger type pump unit which prevents the scraping-out of a brake liquid from a space effective utilization point and more easily and more cheaply and also prevents the decrease of pump efficiency and secures the durability performance of e seal ring. SOLUTION: This is a plunger type pump unit that consists of a cylinder part 101 that communicates with a discharge hole 105 and a suction hole 117; and a plunger 113 that is slidably fitted to the cylinder part 101 and is equipped at a groove 113a with a resin ring 111 having a slit 110 and in addition equipped the rear side of the resin ring 111 with a rubber ring 112. |
