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Buffer Seals

RS BufferR BufferRB BufferRM Buffer

Cross Section

Cross Section

Cross Section

Cross Section
Buffer seal® for extreme pressure spikes for larger rod applications. Designed to vent backpressure.
  • PTFE or Rigid Plastic Cap - Improved extrusion resistance at higher pressures and clearance gaps
  • Low compression set energizer - Improved low pressure and long term sealability. Improved long term performance
  • Vented static surface on expander and vented inboard axial surface on energizer and cap - Reduced possibility of pressure trap between primary rod seal and Buffer Seal
  • Retrofits standard Buffer Seal® Grooves - Provides an alternative to PTFE type Buffer Seals®
PTFE buffer seal® used to protect the primary rod seal from pressure spikes and contamination.
  • PTFE primary sealing lip - Low friction and long service life
  • Low compression set energizer - Excellent low pressure seal ability and long service life
  • Geometry designed to vent pressure from the reverse side - Reduced possiblity of pressure trap between primary seal and the Buffer Seal
  • Geometry designed to act as internal wiper - Protects primary seal from internal contaminants
Buffer seal for extreme pressure spikes for smaller rod applications. Designed to vent backpressure.
  • High temperature / low compression set Polyurethane material - Extended temperature service capability. Long service life
  • Retrofits standard Buffer Seal® Grooves - Provides an alternative to PTFE type Buffer Seals®
  • Rigid endless anti-extrusion ring - Improved extrusion resistance at higher pressures and clearance gaps
  • Flexible static lip - Reduces possibility of pressure trap between primary rod seal and Buffer Seal
  • Vented axial surface on dynamic lip - Reduces possibility of pressure trap between primary rod seal and Buffer Seal
Buffer seal® for extreme pressure spikes for smaller rod applications. Designed to vent backpressure. Suitable for rods up to 3 inch diameter.
  • High temperature / low compression set - Polyurethane material Extended temperature service capability. Long service life
  • Retrofits standard Buffer Seal® Grooves - Provides an alternative to PTFE type Buffer Seals®
  • Flexible static lip - Reduces possibility of pressure trap between primary rod seal and Buffer Seal
  • Rigid split anti-extrusion backup for installation - Improved extrusion resistance at higher pressures and clearance gaps
  • Vented axial surface on dynamic lip - Reduces possibility of pressure trap between primary rod seal and Buffer Seal


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