Mercury - Quicksilver Dual Water Pickup Flush Seal Kit Flush Seal Kit Marine-Grade Polymer 881150Q1. Overview. There's a certain comfort that comes with knowing your engine is being cared for the right way. When you're rinsing the salt out after a long morning of chasing a tide line or wrapping up a weekend ride with friends, you want the flush to be simple, steady, and dependable. That's exactly the feeling this Mercury Marine part delivers. The Quicksilver Dual Water Pickup Flush Seal Kit give