Gas Tight Ring Solution in none-lube service Hydrogen application
Conventional sealing ring designs have a lot of gaps which are necessary to compensate the worn off ring material. Although those gaps are covered by separate cover rings, it is not possible to get those dynamic systems absolutely gastight.
Internal parts piston rod packing
The sealing material of internal parts was too brittle with only 0.5 % of elongation at break. Due to ring breakage, springs were also affected, and leakage rates went up because sealing efficiency was no longer given.