Loading metrics Open Access Peer-reviewed Research Article Citation: He D, Jiang T, Xu H (2026) Performance degradation and failure mechanisms of pultruded carbon/glass-fiber hybrid sucker rods after long-term downhole service. PLoS One 21(10): e0360408. https://doi.org/10.1371/journal.pone.0360408 Editor: Vinod Ayyappan, King Mongkut’s University of Technology North Bangkok, THAILAND Received: June 26, 2026; Accepted: September 26, 2026; Published: October 15, 2026 Copyright: © 2026 He et al.