Flat Face O-Ring (FFS)

SAE J1453

FF-600

Sealing – The seal takes place by compressing the O-Ring onto the flat face of the female.   The threads hold the connection mechanically.

 

Inch Size Dash Size Nominal Thread Male Thread OD (inch) Female Thread ID (inch)
1/4 -04 9/16×18 9/16 (0.56) 17/32 (0.51)
3/8 -06 11/16×16 11/16 (0.69) 5/8 (0.63)
1/2 -08 13/16×16 13/16 (0.82) 3/4 (0.75)
5/8 -10 1×14 1 (1.00) 15/16 (0.93)
3/4 -12 1-3/16×12 1-3/16 (1.19) 1-1/8 (1.11)
1 -16 1-7/16×12 1-7/16 (1.44) 1-3/4 (1.36)
1-1/4 -20 1-11/16×12 1-11/16 (1.69) 1-5/8 (1.61)
1-1/2 -24 2×12 2 (2.00) 1-15/16 (1.92)

 

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