Urethane Springs — Square Type & Die Blocks

Use metal-top versions when the load on the block is concentrated at specific points rather than evenly distributed. The steel plate distributes the load uniformly across the urethane surface, preventing localized deformation (punch-through). Use standard blocks when the load is already distributed evenly across the full contact area — they cost less and perform identically under uniform loading.

Shore A90 provides approximately 40-60% higher load capacity than Shore A70 for the same physical dimensions. A90 is the standard choice for heavy blanking and stripping. A70 is specifically designed for delicate parts requiring softer, lower-impact cushioning — such as precision electronics components and cosmetic metal stampings.

Yes — square and rectangular urethane blocks fit directly into non-circular die pockets where cylindrical springs cannot be used. They provide flat, wide-area cushioning under stripper plates, pad retainers, and custom die features. Select block dimensions (L×W×H) to match your pocket size, or use configurable-length blocks for non-standard depths.