Silpak, Inc

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Silicone Tin RTV

R-1164 A / RN-1157 B (65A Shore)

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R-1164 A/RN-1157 B Two-Part, Tin RTV (Condensation Cure) silicone rubber with capabilities ranging from general purpose to aerospace applications where high temperature resistance is required. This RTV system’s consistent curing characteristics, excellent shelf life, and hardness make it a product that can easily meet a broad variety of application needs.

Physical Properties (Typical Values):

Color: Tan/Green
Viscosity @ 25C: 54,000 cps/ Mixed
Shelf Life: 6 months

Cured Compound:

Specific Gravity: 1.40
Hardness: 65
Tensile Strength: 571 psi
Elongation at Break %: 180
Tear Resistance: 48

Mixing Instructions:

R-1164 A is processed by adding curing agent RN-1157B at 3%. Mechanical properties are dependent on the catalyst level. R-1164 Silicone has 30 pot life and 24 cure. After the mold has been removed from the master, it should be left for 24 hours in order to develop its maximum mechanical strength.


The information and data contained herein are based on information we believe reliable. Each user of the material should thoroughly test any application and independently conclude satisfactory performance before commercializing. Suggestions of uses should not be taken as inducements to infringe on any particular patent.