Rotary Thermoplastic Seals-Abrasion

Failure mode

abrasion

Failure cause

too rough mating surface

too low Rmr (material bearing ratio) of mating surface

Remedial measures

improve mating surface

increase Rmr (material bearing ratio) follow 

surface recommendations

Failure mode

abrasion

Failure cause

wrong mating surface quality (inadequate seal partner)

Remedial measures

Improve shaft surface, e.g. polishing

change to other type of shaft coating

Failure mode

abrasion and deformation

Failure cause

circumferencal-/running speed too high

too high friction heat

Remedial measures

reduce sliding speed

modification of design (e.g.decrease shaft diameter)

Failure mode

abrasion

Failure cause

material bearing ration, Rmr, too low of shaft 

surface

Remedial measures

improve surface quality of shaft

replace by a more wear resistant seal material