Smooth-On SO-FLEX II Pint

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SO-FLEX™ II is a phthalate free softening agent that will lower the cured durometer of a variety of Smooth-On flexible polyurethane products. The following charts indicate the effect SO-FLEX™ II has on fully cured (7 days) PMC™-121/50, Vytaflex™ 30 and Reoflex™ 20 urethane rubbers when added as a percentage of the total mix.

Instructions

Safety – Use in a properly ventilated area (“room size” ventilation). Wear safety glasses, long sleeves and rubber gloves to minimize contamination risk. Store and use products in a warm environment(73°F / 23°C). This product has a limited shelf life and should be used as soon as possible. Wear gloves and eye protection to minimize risk of contamination.

Softening PMC™-121/50 with SO-FLEX™ II - Normally, PMC™-121/50 cures to a hardness of Shore A 50. PMC™-121/50 can be made softer and more flexible by adding different percentages of SO-FLEX™ II as indicated below.

Part B SO-FLEX™ II Mix Thoroughly Parts A Shore A Hardness 100 g 0 g Mix 100 g 50 100 g 10 g Mix 100 g 44 100 g 20 g Mix 100 g 39 100 g 40 g Mix 100 g 31

Softening Vytaflex™ 30 with SO-FLEX™ II - Normally, Vytaflex™ 30 cures to a hardness of Shore A
30. Vytaflex™ 30 can be made softer and more flexible by adding different percentages of SO-FLEX™ II as
indicated below.

Part B SO-FLEX™ II Mix Thoroughly Parts A Shore A Hardness 100 g 0 g Mix 100 g 30 100 g 10 g Mix 100 g 27 100 g 20 g Mix 100 g 20 100 g 40 g Mix 100 g 16

Softening Reoflex™ 20 with SO-FLEX™ II - Normally, Reoflex™ 20 cures to a hardness of Shore A 20. Reoflex™ 20 can be made into a much softer and more flexible ‘gel’ type material by adding different percentages of SO-FLEX™ II as indicated below.

Part B SO-FLEX™ II Mix Thoroughly Parts A Shore A Hardness 100 g 0 g Mix 100 g 20 100 g 10 g Mix 100 g 17 100 g 20 g Mix 100 g 13 100 g 40 g Mix 100 g 6

Note: At 40 parts SO-FLEX™ II, softened Reoflex™ 20 will be ‘tacky’ when cured. This tackiness can be eliminated by applying baby powder or talc to the surface of the cured rubber.

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