Direct Replacement for A1120 & A1121: This kit includes the exact O-rings for Bennett trim tab actuators using part numbers A1120 and A1121. Fits assemblies A1101A, A1200S, A1101EX, and A1200SRC
Stop Hydraulic Leaks & Drifting: Worn or compressed O-rings allow fluid to bypass the piston, causing slow tab response, creeping drift, or the pump running more often than it should. Replacing these seals restores proper pressure and keeps your tabs where you set them
Black Nitrile Rubber Construction: These O-rings are molded from Buna-N (Nitrile), a material chosen for its resistance to hydraulic fluids, water, and abrasion. It maintains flexibility across a wide temperature range and provides reliable sealing in marine environments
Complete Kit: You get four O-rings (2x A1120, 2x A1121) plus a packet of marine-grade assembly grease. The grease helps hold O-rings in place during installation and improves initial sealing before hydraulic pressure takes over. One kit, one purchase – no running to the hardware store for extras
Simple DIY Repair: No special tools required. Depressurize the system, remove the actuator end cap, replace the old O-rings, lubricate lightly with the included grease, and reassemble. Save the cost of new actuators by rebuilding the ones you have