British Flat-Face Seal (BSF)

A seal is made when the O-ring in the male contacts the flat face on the female.  These couplings are intended for hydraulic systems where elastomeric seals are acceptable to overcome leakage and leak resistance is crucial. 

The solid male British O-ring flat-face seal fitting will mate with a swivel female British O-ring face seal fiting only.  An O-ring rests in the O-ring groove in the male.



                                   Male British Flat-Face                                                    Female British Flat-Face
                                              BMF                                                                          BSF