CFKS Gearbox Sealing NBR Rubber EC Oil Seal 52*7 Hydraulic End Cover Seal
The CFKS 52*7 NBR EC Oil Seal is a heavy-duty, static boundary component engineered explicitly for large industrial gearboxes and hydraulic end covers. By fully encapsulating a rigid carbon steel skeleton within a durable elastomeric NBR jacket, this premium bore plug provides an impenetrable, interference-fit barrier. It permanently seals open housing bores, preventing catastrophic loss of internal gear lubricants while actively excluding environmental contamination.
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Absolute Static Sealing: The fully rubberized 52mm outer diameter naturally compensates for housing bore imperfections and thermal expansion.
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Deep 7mm Axial Stability: The extended 7mm width provides maximum surface area contact, preventing the plug from twisting or backing out under internal gearbox pressure spikes.
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Corrosion-Proof Exterior: The continuous NBR coating completely isolates the internal metal reinforcement, eliminating the risk of galvanic corrosion between the plug and the cast-iron transmission casing.
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