SJTO is the same as SJT but with an oil-resistant thermoplastic outer jacket, rated 300 volts at 60 degrees C.
SJTO, described in relation to SJT, is the same junior service cord but with an oil-resistant thermoplastic compound used for the outer jacket, rated at 300 volts and generally for 60 degrees C. The O suffix marks the oil-resistant jacket, which protects the cord in environments where oils are present. The all-thermoplastic construction provides durability, flexibility, and moisture resistance along with the oil resistance.
By adding an oil-resistant jacket to the SJT construction, SJTO suits portable power applications around oils and greases, where an ordinary jacket would degrade. The thermoplastic build keeps the cord economical and durable for industrial use.
In commercial and industrial settings, oil-resistant thermoplastic junior service cords like SJTO supply portable power where oil exposure is a concern. Recognizing the designation and its suffix is part of identifying cord suited to the environment.
Because adding an oil-resistant jacket to the SJT construction suits portable power around oils and greases, SJTO protects the cord where an ordinary jacket would degrade, with the all-thermoplastic build keeping it economical and durable for industrial use.
At Windy City Wire, the focus on quality low-voltage cable and cord includes oil-resistant thermoplastic portable cord types like SJTO. Supplying cord with appropriate jackets and ratings helps customers match products to portable power needs in oily commercial and industrial environments.
SJTO (oil-resistant thermoplastic jacket, 300 volt, 60 degrees C)
UL (Underwriters Laboratories), which lists flexible cord types