An automated seal selection, seal design, manufacturing, and post sales system allows a distributor or untrained user to select a replacement seal for a pump. Both the axial ends 53a and 53b of the stepped down groove 53 are located axially outside of both the axial ends 33a and 33b of the third oil groove 33 at least while the valve is in pressure-adjusting condition. The vibration frequency to be detected is dependent on the support member’s mechanical structure, in which the support member’s mechanical structure is mechanically reconfigurable to vary the vibration frequency to be detected by the sensor. Hydrolysis of these carbamate linkages releases the amine drug at a controllable rate as the gel degrades.