Wiper A211
A211 wipers are protective seals with a thin construction made of polyamide (PA), used in hydraulic systems as a complementary element of the main sealing set. The rigid polyamide profile is intended for removing adhering deposits from the rod surface — deposits that standard elastomeric wipers cannot effectively remove due to their flexibility.
The thin polyamide construction and removal of adhering deposits from the rod
Polyamide has greater hardness compared to polyurethane and NBR, which allows mechanical scraping with greater force. A211 is used when the rod accumulates substantial deposits — mineral crusts, adhering impurities, oxides. The thin profile makes A211 compatible with shallow grooves where other types of wipers cannot be installed. You can find the complete catalog of wipers on Hydraulic Seals Store.
Industrial applications in which the A211 profile complements the main sealing system
A211 does not replace elastomeric wipers — it complements them. It is used in combination with a polyurethane or NBR wiper, in separate grooves, covering both the cleaning of adhering deposits (A211) and the blocking of fluid contaminants and fine particles (the elastomeric wiper). Typical applications include cylinders in installations with hard water, the extractive industry, or environments with solid residues. Also compare with BWA wipers for applications with preliminary rod cleaning.
Selecting A211 wipers according to the rod diameter, outer diameter, and profile thickness
The selection is based on the rod diameter, the outer diameter of the housing, and the profile thickness. With polyamide, installation tolerances are stricter than with elastomers. Check the groove dimensions before ordering. Also compare with LBH wipers with a double profile for increased protection.
Ordering A211 wipers from the Hydraulic Seals Store
We keep A211 wipers in stock in standard sizes. We deliver quickly throughout Romania. Contact the Hydraulic Seals Store team for assistance in selecting the correct size.