MIL-DTL-81716 Packing, Preformed, Straight Thread Tube Fitting Boss, Type Ii Hydraulic \(-65 Degrees F To +275 Degrees F \)This specification covers one type of elastomeric straight threaded tube fitting boss packings for use in 3000 psi \(20.68 MPa\) hydraulic systems using MIL-PRF-5606 fluid throughout a temperature range of -65 Degrees F to +275 Degrees F \(-54 Degrees C to +135 Degrees C\).