HAO-O mainly provides non-standard customized rubber seals, which are used for sealing of pneumatic components and hydraulic system seals. Products include pure rubber seals, rubber metal adhesives, etc.

Pneumatic U-cup seals, VA-seal, VS-seal, VL-seal, pneumatic solenoid valve stem seals, pneumatic nail gun buffers, etc.

Hydraulic seals are mainly Y-rings, U-rings, screw-connected ED seals, etc.