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FMC® 201

Technical Datasheet | Supplied by Smooth-On

FMC® 201 by Smooth-On is a polysulfide rubber mold compound. Exhibits durability, good tear strength and cures overnight with negligible shrinkage to a soft Shore A15 rubber that stretches. It is not sensitive to moisture and can be poured directly over wet plaster or water/ sulfur based clays. FMC® 201 has a mix ratio of 100A:12B by weight. Common applications include molds for foundry & pattern work, sculpture (lost wax process), casting various gypsum products and waxes.

FMC® 201 Properties

Mechanical Properties

Value & Unit

Test Condition

Test Method

100% Modulus

29 psi

Durometer Hardness (Shore)

(Shore A)

Tensile Elongation

700 %

(@ Break)

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