RTV Silicones >> Aerospace thermal insulation >> Clear, 2 Part Flowable Potting and Encapsulating Compound



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RTV Silicones by

2-Part Potting/Encapsulating Compound RTV21

Technical Support
for RTV Silicones

1-800-295-2392

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MSDS

Catalyst options/MSDS

Primer options/MSDS

Specifications

Available Sizes

Related products:

RTV21

RTV31

RTV60

RTV88

RTV560

RTV566

RTV577

RTV630

RTV656



	Selection Guide One Part Chart Two Part Chart


	General Purpose Aerospace Marine High Performance Assembly Electronics Thermal Conductivity High Temperature Low Temperature

Primary Characteristics

Pink flowable

Aerospace thermal insulation

Condensation cure

Primer required

Use for:
Aerospace thermal insulation
Thick-section potting
Pour-in-place gasketing

Use for aerospace thermal insulation, thick section potting, and pour-in-place gasketing. Primer is required. The product comes complete with catalyst DBT. Specialized catalysts are avialable upon request.

Available Sizes

Catalog Number	Sizes Available	Description
RTV21-1G	1 gallon	pail
RTV21-5G	5 gallon	pail
RTV21 requires a primer. Visit our primer guide for details.

Specifications

Use	General Purpose Potting
Special Feature	Aerospace thermal insulation
Cross Reference	RTV21
Uncured Properties
Consistency	Flowable
Color	Pink
Specific Gravity	1.32
Pot Life (@ 25°C / 77°F)	1 hour
Cure Through Time	24 hours
Useful Temp. Range	-60°C to 205°C (-75°F to 400°F)
Cured Properties - MECHANICAL
Hardness	45 (Shore A)
Tensile Strength	2.16 MPa (310 psi)
Elongation	180%
Cured Properties - ELECTRICAL
Volume Resistivity	2.6 x 10¹⁴ ohm · cm
Dielectric Strength	16.5 kV/mm (420 V/mil)
Dielectric Constant	3.8 @ 1000Hz
Cured Properties - THERMAL
Thermal Conductivity	0.31 W/m · °K
Thermal Expansion	20 x 10^-5 cm/cm °C
	(11 x 10^-5 in/in °F)
Other
Viscosity (@ 25°C)	11,000 cps
Mix ratio (by weight)	100:0.5

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