Sheath

Appearance:
Metallic, 32 micro inch rms finish or smoother

Tolerance:
O.D. is within = 15% or = .002" of nominal,
Whichever is larger

Anneal:
Sheath shall be fully annealed

Pressure

Can withstand an external pressure equivalent to 50,000 PSI (2500 kg/cm)

Fabrication

Can be welded, brazed, or soldered without changing insulation resistance
providing normal care is used for the metals and thickness involved

Insulation

Standard Composition:
Compacted MgO

Insulation Resistance

Room Temperature
Minimum of 100 Mega ohms at 600 VDC
(For d=0.062 and greater)
Minimum of 100 Mega ohms at 50 VDC
(For d=less than 0.062)

At 1800°F
Minimum of 20,000 ohm-ft at 6 VDC