O RINGS
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    Backup Ring
 
 

   Back Up Ring 

  Technical Details  
  MATERIAL :
P.T.F.E or P.T.F.E. with filled grades such Bronze, Glass, Graphite.
MAX. OPERATING CONDITIONS :
Temp : -30 Deg C to +200 Deg C (depending on O-Ring material).
Pressure : 400 BAR (depending on O-Ring).
MAX. SURFACE ROUGHNESS :
Static : 0.8 mmRa
Dynamic : 0.4 mmRa
COMPATIBILITY :
Mineral oils, bio oils,water soluble & water glycol fluids.
DETAILS :
The Back up ring is a anti extrusion ring which prevents the O-Ring from extruding in the clearance gap. It is required to be seated behind the sealing O-Ring. In case of a double acting pressure, the Back up ring is seated on both sides of the sealing ring in the groove. Back up rings are also available in split & endless form to enable ease of fitment. Kindly refer the O-Ring section for groove dimensions, Page No. 2 & 3 (Section : O-Ring Housing Dimensions & Tolerances).
ORDERING INFORMATION :
O-Ring part no. with housing Fig. I/II (refer sketch above). For eg. : OR 000 00000 - I.
OR 000 00000 - II.
Quad-Ring part no. with housing Fig. I/II  For eg. : QR 000 00000 - I.
QR 000 00000 - II.