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Key Differences

Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
Mixed Viscosity11,000 cpsLight Paste
Pot Life5 minutes10 minutes
Cure Time45 minutes90 minutes
Shore D Hardness70
Shore A Hardness22
ColorTranslucent GreenOff White
Elongation @ Break450 %1.5 %
Disclaimer
Although we do our best to ensure the accuracy of this Compare Tool, Smooth-On offers no warranty either expressed or implied as to the reliability of the information contained herein. Smooth-On assumes no liability for loss or damage associated with use of the Compare Tool. If this is a critical project, we encourage you to review all of the technical data below and contact our Technical Service department with any questions or concerns.

All Technical Data

EZ-Spray® Silicone 22Plasti-Paste®
Product Type
  • Silicone Rubber - Platinum Cure
  • Urethane Resins
Mixed Viscosity11,000 cpsLight Paste
Mix Ratio By Volume1A:1B1A:3B
Mix Ratio By Weight41A:100B
Pot Life5 minutes10 minutes
Cure Time45 minutes90 minutes
Shore D Hardness70
Shore A Hardness22
Specific Gravity1.08 g/cc1.16 g/cc
Specific Volume25.6 cu. in./lb.23.9 cu. in./lb.
ColorTranslucent GreenOff White
Die B Tear Strength102 pli
Tensile Strength490 psi
Tensile Modulus168,100 psi
Ultimate Tensile1,600 psi
Elongation @ Break450 %1.5 %
100% Modulus49 psi
Compressive Strength3,420 psi
Compressive Modulus48,800 psi
Flexural Strength3,410 psi
Flexural Modulus150,000 psi
Shrinkage<.001 in. / in.0.005 in. / in.
Heat Deflection Temp130 °F
Useful Temperature (min)-65 °F
Useful Temperature (max)500 °F

Product Description

EZ-Spray® Silicone 22

EZ~Spray® Silicone 22 are sprayable silicones which cure quickly to soft rubbers with high elongation and tear strength. Liquid silicone is sprayed through the EZ~Spray® Junior Cartridge System which is an economical alternative to expensive spray equipment. After a suitable thickness is attained, EZ~Spray® Silicone 22 cures in about 45 minutes. EZ~Spray® Silicone cures with negligible shrinkage to strong, durable silicone rubbers good for production casting of polyester, epoxy or urethane resins, gypsum, concrete and other materials.

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Plasti-Paste®

Plasti-Paste® is a two component fiber resin that is designed for vertical surface application. Part A is a liquid and Part B is a paste. Mix ratio is 1A : 3B by volume (41A:100B by weight). It has no odor and pot life is 8 – 10 minutes depending on mass. Demold time (can be handled) is about 90 minutes depending on mass. Plasti-Paste® holds a vertical surface without sagging and cures to a strong, durable and lightweight plastic. Suitable as a mother mold / support shell (reinforces shape of rubber mold during casting). Can be pigmented with So-Strong® color tints from Smooth-On. Add cabosil or other filler as an extender or for special effects.

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Silicone Rubber - Tin Cure ›

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Urethane Rubber ›

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