47216970 INTERMEDIATE RING

SKU: 1638

The intermediate ring sits between the low-pressure (inlet-side) and high-pressure seal stages in a triplex plunger pump's seal stack, holding each stage in its proper position and keeping the two sealing zones separated as the plunger reciprocates. Because it is a hard, dimensionally critical spacer, a cracked, worn, or distorted intermediate ring lets the seals shift or lose compression, showing up as weeping at the seal housing or declining pressure. When it comes out scored or deformed during a reseal, replace it rather than reusing it. Confirm fitment by matching part number 47216970 against your pump's parts list or data plate — never assume one ring size fits every pump.