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The RC Series from RIVERLAKE is a range of single-acting, spring-return hydraulic cylinders engineered for reliability, durability, and ease of use in industrial, construction, and maintenance environments. Every detail is meticulously designed to deliver consistent force, long service life, and low maintenance requirements. • Reinforced Nylon Thread Protector A heavy-duty nylon external thread protector safeguards the cylinder’s outer ring threads from impact, debris, and damage, preserving thread integrity for repeated installations. • High-Strength Lifting Eye – Heavy Tonnage Models Large-tonnage cylinders come equipped with a G80 grade lifting eye, certified for high-strength lifting and safe handling during transport and positioning. • Hidden Vent Port – Faster, Smoother Retraction An integrated concealed vent hole allows rapid and stable spring return, eliminating trapped air and ensuring smooth, consistent retraction cycles. • Polyurethane Seals – Longer Life, Better Performance Premium polyurethane seals offer outstanding sealing efficiency, high abrasion resistance, and extended service life – even under frequent cycling and high-pressure operation.