Valve Seats Valve seats and seats are can be made using PTFE, RPTFE, TFM. At JD Jones, these products are available in a range of dimensions and profiles and are customisable based on customer requirements and OEM drawings. Aside from standard parts, we also manufacture customised components to suit specific customer requirements and end-use applications. Our Products Includes PTFE and RPTFE back-up rings Thrust washers Ball Valve Seats Butterfly Valve Seats Piston Ring Seals Rotary Shaft Seals Spring-energised Seals Actuator Joint Bush PTFE/RPTFE Specialised Gaskets