2026-09-08
Choosing the appropriate RTV2 silicone hardness directly affects demolding ease, detail fidelity, and mold life. This article provides a hardness selection reference for cultured stone and wall tile factories.
One of the most frequently asked questions by cultured stone and wall tile factories is: "What hardness of RTV2 silicone should I use?" The answer depends on the product design, casting material, and production volume.
Suitable for deep castings, complex 3D reliefs, or molds with delicate raised details. Softer silicone is easier to bend during demolding, reducing the risk of damaging the casting or tearing the mold. Particularly suitable for intricate 3D wall tiles and high-textured field stone designs. However, overly soft molds may require an outer support shell (mother mold) when producing large panels.
This is the most widely used choice in most cultured stone production, striking a balance between demolding flexibility and structural stability. Suitable for stacked stone finishes, brick-patterned panels, slate textures, and standard decorative wall tiles, balancing detail reproduction with mold durability.
Recommended for large-format wall tiles and flat or shallow relief designs where dimensional stability is critical. Harder molds are less prone to deformation under concrete weight, allowing for higher-strength mass production. However, less suitable for deep casting structures.
As a manufacturer of RTV2 liquid silicone, we can provide customized hardness formulations and assist your factory in selecting the optimal grade based on your product catalog and production methods.
Keywords: RTV2 silicone hardness selection, cultured stone mold silicone, Shore A hardness, wall tile mold material selection
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