Pinion oil seal for most later TVR power steering racks. This is the lower pinion oil seal for all the later TVRs. This is the seal at the bottom of the valve body to the pinion shaft. If the steering rack appears to be leaking power steering fluid into the rack and pinion section this could be the culprit. There are only 3 seals relating to the pinion leaking, TVR H0293 at the top of the pinion and valve body, TVR H0319 and TVR H0190, the O ring at the base of the torsion bar.