Youqi wiper seal strip, model Oil Seal‑443, is TC‑type oil seal made of rubber in black color, hardness 20‑90 Shore A. Featuring good oil‑resistant performance, it realizes effective hydraulic oil sealing for excavators and cylinders. Both standard and non‑standard customized sizes are available to meet various working conditions. Samples are offered for your evaluation. Produced in Shanghai, China. This rod wiper scraper prevents dust, dirt and impurities from entering hydraulic systems while blocking hydraulic oil leakage. With stable sealing performance, it fits well for excavator hydraulic pump and piston rod sealing applications. Reliable quality supports long‑term field operation.