Diagonal Packing Set

E-250 Fluoromaroon Diagonal Packing is also commonly known as a labrynth seal. Main shafts in processing equipment can be costly to replace if it is not properly protected from mechanical wear from the usual lubricant seals.  Ordinary seals commonly used on process equipment, have extremely limited life and may cause considerable damage to the shaft it is sealing. However, it is possible to control internal leakage of fluids within gas and steam turbines, compressors, and pumps while protecting expensive machinery. The Diagonal Packing Set is installed at the bottom of the stuffing box as a first defense.


UFC Fluorogreen produces Diagonal Packing Sets using E-250 Fluoromaroon and E-100 Virgin PTFE Material. Diagonal Packing Sets are specifically used to control the flow of fluid between moving Parts and are used for sealing in fluid to rotary shafts. The sets restrict the flow of fluid in high and low pressures.


E-250 Fluoromaroon is a chemically modified, unfilled PTFE material whose properties, over non-modified materials are major improvements.  E-250 Fluoromaroon has extremely low deformation, excellent welding capabilities, very high tensile strength and elongation, ultra low void ration, and high dielectric strength.


E-250 Fluoromaroon is an excellent material in high temperature applications. It is especially effective for seals in rotating equipment and is also used to encapsulate metallic components for protection asainst corrosion.


E-250 Fluoromaroon is the perfect choice as a general high performance material. Diagonal packing sets can be manufactured in all our high perfomance materials. 



Physical Properties

ASTM Method


 E-250 Fluoromaroon





 Creep Relaxation %



 Compressability Range %



 Tensile Strength, PSI






 Specific Gravity



 Hardness, Shore D-2



 Recovery %


Temperature and Pressure Ratings





 E-250 Fluoromaroon

 1200 PSI

 -350 to +500 F


This is a general guide and should not be the sole means of selecting or rejecting these materials. The above data was independently combined by: Texas Engineering Experiments Station, Materials and Structures Laboratory, Royce E. Wiseenbaker Engineering Research Center, Texas A&M University System, College Station, Texas 77843, 409-854-7328 and other independent sources.


WARNING: The data set forth on this site is typical. The user's specific application should be combined with independent study and evaluation for the materials suitability. For recommendations please contact UFC Fluorogreen. Selecting the wrong sealing products could reult in property damage and/ot personal injury. We assume no responsibility for errors contained on this site.