Abstract: A heat detector comprising a housing member, a first hermetic connector portion connected to the housing member, a sensor member disposed in the housing member operative to detect a temperature, and a first contact portion disposed in the first hermetic connector portion, wherein the contact portion is connected to the sensor member.

Abstract: A compression fitting for use in, for example, gas turbines includes a sleeve and an integrally formed key disposed partially along the length of the sleeve, a compressor body, a receiver body that threadably engages with the compressor body, and a seal. The seal is compressed against wires or instrumentation lines that pass through the fitting from the interior to the exterior of the gas turbine. The one part construction of the sleeve and key facilitates assembly of the compression fitting into the gas turbine. The key prevents the sleeve from rotating during and after compression of the fitting thereby protecting the wires or instrumentation lines passing through the fitting from being damaged or sheared off.