MS8008C
Protective sleeve code: See table XIX.
TABLE XIX. Protective sleeve code.
Code |
Type |
A |
SAE AS1072 sleeve, fire protection, silicone covered, temperature ranging from -65°F to 450°F, and intermittently to 500°F; secured with CRES bands as required. 1/ |
B |
SAE AS1073 - code B sleeve, abrasion protection, heat shrinkable, black polyolefin, temperature ranging from -65°F to 250°F. |
C |
SAE AS1291 - code A sleeve, chafe guard, extruded seamless white PTFE, temperature ranging from -65°F to 450°F, secured with CRES bands as required. |
D |
SAE AS1291 - code C sleeve, chafe guard, extruded seamless transparent FEP, temperature ranging from -65°F to 350°F, secured with CRES bands as required. |
E |
SAE AS1298 sleeve, heavy wall chafe guard, extruded seamless black PTFE, temperature ranging from -65°F to 450°F, secured with CRES bands as required. |
L |
Lock-wire hole |
F |
Code A + L |
G |
Code B + L |
H |
Code C + L |
J |
Code D + L |
K |
Code E + L |
1/ To prevent wicking of fluids, the cut ends of the fire protective sleeve (code A) shall be coated with Room
Temperature Vulcanized (RTV) silicone rubber prior to installation. After installation, cracks and voids in the fire protective sleeve shall be coated with RTV rubber to prevent exposure of asbestos or fiberglass.
REQUIREMENTS:
Dimensions: Unless otherwise specified, all dimensions are in inches. Dimensions "N (max)" and "T (max)" are installation dimensions and not design dimensions. Dimension "F" is measured across the corners.
Fittings: The swivel nut and nipple ends shall mate with SAE AS33514 fitting. The swivel nut threads shall be in accordance with SAE AS8879. The swivel flange shall conform to MS20756.
Elbow fittings: The ovality of the circular cross section within the angle of the bend of the end fitting elbow shall not exceed 7.5% of the nominal tubing OD.
Assembly classification: Class 1 and class 2 hose assemblies, as specified in MIL-DTL-25579, have been incorporated into the Part or Identifying Number (PIN) as a part of styles.
Angular alignment: Hose assemblies with elbow fittings on each end shall have the angular orientation between the elbows measured counter-clockwise from the centerline of the nearest fitting, positioned at six-o'clock, to the centerline of the other fitting (see figure 19). When applicable, the angular alignment shall be expressed in three digits and specified in the PIN.
Protective sleeve: If required, the hose assembly shall include a protective sleeve (see table XIX) and its code shall be included in the PIN. Fire protective sleeve shall be subjected to testing in accordance with MIL-DTL-
25579.
Assembly length: Hose assembly shall be furnished in lengths as specified in the contract or purchase order (see
MIL-DTL-25579); however, tolerances on the length of each hose assembly shall be as follows:
a. ±1/8 inch for lengths under 18 inches.
b. ±1/4 inch for lengths from 18 inches to 36 inches. c. ±1/2 inch for lengths from 36 inches to 50 inches. d. ±1% for lengths over 50 inches.
Flareless fitting, hose connector design: Use MIL-DTL-25579/1 for application of NAS 1760 design or MS8000 series seal design.
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