Cat 5H-8853 O-Ring is a VMQ silicone seal (70A) sized 1.78 mm cross-section by 9.25 mm inside diameter, manufactured as Caterpillar part 5H-8853. It is specified for IT12, IT18, IT18B, IT28, IT28B, and IT38G II configurations, matching the original Cat seal for reliable fit in those assemblies. This compact O-ring delivers a precise, durable seal for Caterpillar hydraulic interfaces where exact dimensions and material compatibility are essential.
