For dam and lock gate slide blocks, traditional choices are tin bronze or stainless steel. But a newer material — UHMWPE (Ultra-High Molecular Weight Polyethylene) — is rapidly becoming the preferred option. Here's a quick comparison.
The Problem with Metal Sliders
Require a grease lubrication system, adding maintenance.
Can corrode or gall, damaging rubber seals.
Heavy and costly to replace.
Why UHMWPE Stands Out
Self-lubricating. No grease needed — cleaner and maintenance-free.
Extremely wear-resistant. Outlasts steel 7-10 times in silty water.
Zero water absorption. No swelling, no corrosion.
Seal-friendly. Smooth surface protects gate rubber seals.
Lightweight. Easier handling and installation.
| Feature | Bronze / Steel | UHMWPE |
| Lubrication | Required | None |
| Wear life (silty water) | Moderate | High |
| Corrosion risk | Medium-High | None |
| Seal protection | Can damage seals | Very good |
| Weight | Heavy | Light |
Custom Machining Matters
Specifying UHMWPE slide blocks? Insist on 100% virgin material and CNC machining to exact dimensions. As a UHMWPE sheet manufacturer, we machine finished sliders direct to your drawing — no middleman, fast lead times.
Ready to switch? Send us your drawing or old sample for a quote.
