PT Heavy Duty Oiltight Controls

These true Industrial Switches are built to last. Our PT Heavy Duty Oiltight Controls are rated NEMA 4 & 13 with elastomer seals to keep out water, oils, hydraulic fluids and other liquids these are used in all kinds of harsh environments. With up to four PT contact blocks the operator can control either 16 heavy duty circuits or 32 electronic circuits (silver or gold contacts). Our unique PTY push-pull switch and the PTU selector-push switches round out a broad line of sturdy switches. Standard and custom nameplates are available as are accessories such as guards, padlocking devices, etc. 

  • Easy installation saves time and money.
  • Heavy duty, electronic duty, and gold plated contact blocks.
  • Larger legend plates for larger legending area and for ease of operator identification.
  • Excellent sealing keeps out cutting oils, lubricants, hydraulic fluids, and similar liquids.

PT heavy duty oiltight controls not only make industrial panels more eye pleasing to help reduce operator fatigue but also provide more circuitry control in a minimum of space.

PT oiltight controls meet major automotive manufacturer’s requirements.


Industrial controls manufactured by Senasys are built to meet customer requirements worldwide.


Senasys takes pride in quality control and reliable operation of our products. Every switch is individually 100% tested before it leaves the plant.


Senasys products are UL listed, and suitable for NEMA 4 & 13 enclosures.


Senasys products are designed & manufactured in Eau Claire, Wisconsin, U.S.A.

PT series offers a complete line of matched controls – pushbuttons, selectors, selector push units, indicators, & potentiometers.

PTF 90° Selectors

Two to four position, 90 degree stop units offer solid switching functionality.

PTH Lighted Pushbuttons

The lighted pushbuttons can provide feedback from the pushbutton operation or indicate the pushbutton function is available for use.

PTK Key Selectors

Two to four position key operated switches with spring return and key removal location options create many options for heavy duty limited access control.

PTM Mushroom Head Pushbutton

The two sizes of mushroom head pushbuttons can be used where easier access to the switch is important.

PTP Unlighted Pushbuttons

With four different guarding options the standard unlighted pushbutton can be used in many different applications.

PTS Selectors

Knob and wing lever style, two to four position switches provide high reliability switching capabilities.

PTU Selector-Push

These unique selector-push units combine up to four position selector action with a depress button for additional functionality.

PTV Potentiometer

500 Ohms to 1 Megaohm can be variably controlled with these units.

PTW Compact Indicators

These compact indicators and push to test indicators allow bright feedback in a dense package.

PTY Push-Pull

Our unique push-pull switches have two position and three position momentary and maintained functionality.

PTL Indicators

OBSOLETE – These indicators and push-to-test indicators allow for wide range and longer distance viewing capabilities.