Smooth-Sil™ 936

SS936pint ⓘ 49983138-4ED1-F94E-A866-68CA40F14C8C
Platinum Cure Silicone

This is a lower viscosity platinum silicone rubber (21,000 cps).  It is easier to mix, vacuum degas, and pour and offers flexibility and stability. 

  • Shore 36A hardness
  • Pot life 60 min, demold time 24 hrs
  • Low viscosity for detailed casting
  • Minimal shrinkage
  • High tear strength
€ 52.05

(€ 43.02 without 21% VAT)

In stock

Description

This professional-grade platinum-cure silicone rubber is designed for projects requiring durability, flexibility, and dimensional stability. With a Shore 36A hardness, it balances firmness and elasticity, making it suitable for molds that endure repeated casting cycles with resins, waxes, foams, and low-melt metals.

  • Low viscosity ensures easy pouring and excellent detail reproduction without vacuum degassing in many cases.
  • Cures with minimal shrinkage, producing high-precision molds suitable for industrial prototypes, special effects, architectural elements, figurines, and product design.
  • Offers outstanding tear strength and resistance to heat, chemicals, and deformation, ensuring long service life under demanding conditions.
  • Can be thickened for brush-on applications and modified with pigments or additives for specialized results.

This silicone system is reliable for creators needing a tough, consistent performance across diverse casting materials and production environments.

Instructions

  • Measure equal parts of Part A and Part B by weight or volume and mix thoroughly, scraping sides and bottom until color is uniform. 
  • Due to its low viscosity, vacuum degassing is optional but recommended for critical detail work. 
  • Pour slowly into the mold box from one corner to minimize air entrapment. 
  • Allow silicone to cure undisturbed at room temperature. 
  • Demold after full cure and let the mold rest before use. 
  • For best results, ensure surfaces are clean, dry, and free of sulfur or contaminants.
  • Shore Hardness: 36A
  • Pot Life: ~30 min
  • Cure Time: ~24 hrs

Specifications

Hundred Percent Modulus 180 psi
Color Blue
Die B Tear Strength 110 pli
Mixed Viscocity 21,000 cps
Useful Temperature Min -65 °F
Cure Time 24 hours
Pot Life 60 minutes
Specific Volume 22.9 cu. in./lb.
Specific Gravity 1.21 g/cc
Mix Ratio By Weight 100A:10B
Shrinkage <0.001 in. / in.
Tensile Strength 550 psi
Elongation At Break 500 %
Shore A Hardness 36
Available in Platinum Cure Silicone
Product Cure Time Shore A Hardness Specific Gravity Specific Volume Color Tensile Strength Shrinkage Elongation At Break Hundred Percent Modulus Die B Tear Strength Useful Temperature Min Mixed Viscocity Mix Ratio By Weight Pot Life Hundred Percent Modulus Color Die B Tear Strength Mixed Viscocity Useful Temperature Min Cure Time Pot Life Specific Volume Specific Gravity Mix Ratio By Weight Shrinkage Tensile Strength Elongation At Break Shore A Hardness Mix Ratio By Volume Mix Ratio By Volume Thermal Conductivity Thermal Conductivity
Smooth-Sil™ 936 24 h. 36 1.21 g/cc 22.9 cu. in./lb. Blue 550 psi <0.001 in. / in. 500 % 180 psi 110 pli -65 °F 21,000 cps 100A:10B 60 min. 180 psi Blue 110 pli 21,000 cps -65 °F 24 h. 60 min. 22.9 cu. in./lb. 1.21 g/cc 100A:10B <0.001 in. / in. 550 psi 500 % 36 - - - -
Smooth-Sil™ 940 24 h. 40 1.18 g/cc 23.4 cu. in./lb. Pink 600 psi <.001 in. / in. 300 % 200 psi 100 pli -65 °F 35,000 cps 100A:10B 30 min. 200 psi Pink 100 pli 35,000 cps -65 °F 24 h. 30 min. 23.4 cu. in./lb. 1.18 g/cc 100A:10B <.001 in. / in. 600 psi 300 % 40 - - - -
Smooth-Sil™ 945 6 h. 45 1.24 g/cc 22.3 cu. in./lb. Purple 700 psi <.001 in. / in. 320 % 260 psi 120 pli -65 °F 30,000 cps 1A:1B 25 min. 260 psi Purple 120 pli 30,000 cps -65 °F 6 h. 25 min. 22.3 cu. in./lb. 1.24 g/cc 1A:1B <.001 in. / in. 700 psi 320 % 45 1A:1B 1A:1B - -
Smooth-Sil™ 950 18 h. 50 1.24 g/cc 22.3 cu. in./lb. Blue 725 psi <.001 in. / in. 320 % 272 psi 155 pli -65 °F 35,000 cps 100A:10B 45 min. 272 psi Blue 155 pli 35,000 cps -65 °F 18 h. 45 min. 22.3 cu. in./lb. 1.24 g/cc 100A:10B <.001 in. / in. 725 psi 320 % 50 - - 0.261 W/M*K 0.261 W/M*K
Smooth-Sil™ 960 16 h. 60 1.25 g/cc 22.2 cu. in./lb. Green 650 psi <.001 in. / in. 270 % 280 psi 110 pli -65 °F 30,000 cps 100A:10B 45 min. 280 psi Green 110 pli 30,000 cps -65 °F 16 h. 45 min. 22.2 cu. in./lb. 1.25 g/cc 100A:10B <.001 in. / in. 650 psi 270 % 60 - - - -

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