1050pc 21 Size Rubber O Ring Set Assortment Kit Black Small Metric Washer Seal
✅Friction-Lock Stay-Put Divider Case: The storage vault is engineered with precise, flush-fitting partition walls that line up tightly against the outer lid. ⚙️Lubricate the Interface: Always apply a thin layer of system-compatible lubricant (such as silicone grease or a drop of clean system oil) to the O-ring before installation.