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OFT (Optional Flame Test)
Canadian Standards Association’s test for flameretardance. Tubing with an OFT rating is highly flame-retardant.

Ohm
The unit of electrical resistance.

Operating Temperature
The maximum internal temperature at which a system, harness, or connector may operate in continuous service; generally expressed as a time and temperature.

Operating Temperature Range
The range between the maximum and the minimum internal temperature of insulation in a system, harness, or connector in continuous service. The lower limit is determined by low-temperature flex test.

Optional Flame Test
See OFT.