Precision Sealing for Naval Radar Slip Ring The application Our customer is a globally recognised leader in the design and manufacture of advanced slip ring systems and contactless rotary joints. Their technology ensures the reliable transmission of power, data, and media across a wide range of rotating interfaces. Read more about how our engineers developed … Continued
Supply Plus Ltd designs, manufactures, supplies and distributes safety and fuel delivery equipment, with brands including AS Fire & Safety, Bayley and Collins Youldon. They approached us to design a rotary seal to replace their existing solution which was causing leakage during downtime. The application Supply Plus initially approached us with a requirement for their … Continued
High speed Rotary seals for electric vehicles The electric vehicle industry is growing; global manufacturing and registrations of electric vehicles is increasing exponentially each year. Our engineers have extensive experience in designing seals for automotive applications, but we still find new challenges involved in sealing components within hybrid, hydrogen fuel and full battery powered electric … Continued
PTFE Rotary seal for oil & gas drilling tool Our customer designs and manufactures a leading range of unique downhole technology and drilling solutions that contribute to a net zero energy industry. Read on to find out about our PTFE rotary seal solution for their application. The application Our customer tasked us with developing a … Continued
Our customer designs and manufactures a leading range of unique downhole technology and drilling solutions that contribute to a net zero energy industry. Read on to find out about our PTFE rotary seal solution for their application.
Our customer tasked us with developing a sealing solution for the rod of a downhole drilling tool – a hydraulic dynamic (rotary) application.
The normal operating pressure was 500 PSI at 60 RPM, but maximum pressure could reach 6,500 PSI in static operation. Reverse pressure was unlikely in this application, however, the engineers wanted to ensure some level of resistance.
Two single acting seals could be considered, but groove space was limited. Keeping the grooves closed was preferable for bearing strength.
The maximum operating temperature could reach 200°C and the application media was drilling mud and completion fluids (with wiper arrangement already installed).
Due to the pressure, temperature and chemical media parameters of this application, an elastomer seal selection was not suitable.
Our engineers selected our standard FTOR profile PTFE seal, which is a double acting slipper seal ideally suited to hydraulic applications and capable of sealing under alternating pressure directions. It’s ideal for sealing high pressure loads with slow to moderate rotational speeds. The PTFE seal has side wall notches equally spaced, so the part can be fitted symmetrically either way.
The initial sealing force is provided by the elastomer O-ring (seated within a machined saddle and activated by system pressure to perform under high pressure demands). The central lubricating channel design ensures low friction and wear.
The sealing set was also designed with a scarf cut PEEK back-up ring to ensure stability and seal performance at maximum working pressure of 6,500 PSI.
Our customer tested the sealing arrangement at higher pressure (up to 10,000 PSI). They were pleased to find it sealed successfully over and above the application requirements. They have adopted this seal design for other sizes of parts in similar equipment.