Wiper LBH
LBH wipers are double-profile protective seals mounted at the end of the rod of hydraulic cylinders to block the access of dust, moisture, and abrasive particles into the sealing system. Unlike single-lip wipers, the LBH double profile provides two successive barriers: the first cleans the rod during retraction, while the second stops contaminants that could pass the first contact. They are used in applications with aggressive working environments — excavators, agricultural machinery, drilling equipment.
The LBH double profile and how it limits the ingress of dust, moisture, and abrasive particles
The construction with two contact lips provides a more effective barrier compared to single-profile wipers. The first lip takes on the main cleaning load, while the second completes the sealing against fine particles, water, and fluid mud that can penetrate a single contact. The result is better protection of the rod seal and a longer service life of the sealing system. You can find them in the complete catalog of wipers on hydsealstore.ro.
Features of LBH wipers made of NBR and the working conditions for which this material is suitable
The standard material for LBH is NBR (nitrile rubber), compatible with mineral hydraulic oils and a wide range of industrial fluids. NBR operates between -30°C and +100°C and has good elasticity that maintains contact of both lips with the rod. It is the appropriate choice for standard applications without aggressive fluids or extreme temperatures. If your application involves special conditions, compare with BSZ wipers made of PTFE/NBR available in our catalog.
How do you choose the correct size based on measurements?
Sizing an LBH wiper is done according to three measurements: the inner diameter (corresponding to the rod), the outer diameter of the housing, and the groove depth. All three are necessary for a correct order — a single incorrect dimension makes the wiper incompatible with the cylinder. Also check the geometry of the existing groove, as LBH requires a specific groove profile. If you are not sure about the dimensions, compare with SCK wipers available in the Hydraulic Seals Store catalog.
Ordering LBH wipers from the Hydraulic Seals Store catalog
We keep LBH wipers in stock in the standard sizes used in the hydraulic industry in Romania. We deliver quickly throughout the country. Order online from the Hydraulic Seals Store catalog or contact us for assistance in selecting the appropriate size.