THREAD: AS8879
MATERIAL:

• Nut and Housing - Carbon steel, heat treated.
• Retainer

F1968-(*) 7075-T6- Aluminum alloy.
F1968-(*)H, F1968-(*)L and F1968X(*)L - Carbon steel.
• Seal
  F1968-(*) and F1968X(*) - Rubber per MIL-R-6855, Class I, grade 60, color black.
  F1968-(*)H - Silicon rubber, shore A55-65, color red.
  F1968-(*)L and F1968X(*)L - Fluorosilicone rubber per AMS 3325 or MIL-R-25988, Type II, Class 1, Durometer A70, color blue.

FINISH:

• Nut
• F1968-(*), F1968-(*)H and F1968-(*)L - Cadmium plate per AMS-QQ-P-416, Type II, Class 2 plus Kaylube molybdenum disulfide dry film lubricant coat per AS5272.
• F1968X(*) and F1968X(*)L - Cadmium plated per fed. spec. AMS-QQ-P-416, Type II, Class 2.
• Housing - Cadmium plate per fed. spec. AMS-QQ-P-416, Type II, Class 2.
• Retainer
• F1968-(*) - Anodize coating per MIL-C-5541.
• F1968-(*)H, F1968-(*)L and F1968X(*)L - Cadmium plate per AMS-QQ-P-416, Type II Class 2.
• Seal - None

PERFORMANCE: NASM25027.
FLOATABILITY: .020 min. radially from center.
PRESSURE RANGE: Up to 50 PSI (static differential pressure).
TEMPERATURE:

• F1968-(*) and F1968X(*) -65°F to +225°F
• F1968-(*)H -65°F to +450°F
• F1968-(*)L and F1968X(*)L -65°F to +300°F