RTV Silicones >> Translucent, flowable, 2 Part Potting and Encapsulating Compound >> Extreme low temperature



Jump to Product Number
	3M Engineered Fluids

	3M Electronic Liquids

	Accessories

	Adhesives

	Brushes

	Contact Cleaners

	Desoldering Braid

	Dusters & Circuit Coolers

	Electroless and Electroplating

	Electronic Cleaners

	EMI / RFI Shielding

	Epoxies

	Flux and Flux Remover

	Greases & Lubricants

	Isopropyl Alcohol

	Lead Free Solder

	Leaded Solder

	Pens

	Potting & Encapsulating

	Protective Coatings

	Prototyping Materials

	RTV Silicones

	Screen Cleaners

	Soldering/desoldering

	SpecialtyCleaners

	Specialty Products

	Swabs

	Thermal Management

	Thermally Conductive Adhesives

	Wipes

RTV Silicones by

2-Part Potting/Encapsulating Compound RTV656

Technical Support
for RTV Silicones

1-800-295-2392

M.G. Chemicals Disclaimer
for RTV Silicones >

Locate Distributor >

Quick Links

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

Translucent Flowable
Addition cure
Extreme low temperature
Useful to -115�C
(-175�F)
Mix ratio 10:1
Primer required

Use in aerospace applications for potting, bonding and and sealing, and where extended low temperature service is required. This two-part silicone is supplied with a curing agent. Silicone primer is required.

Available Sizes

Catalog No.	Description
RTV656-1G	RTV656 010-Pailkit(10.0LBS-4.5KG)
RTV60 requires a primer. Visit our primer guide for details.

Specifications

Use	Potting & Encapsulating
Special Feature	Low Temperature
Cross Reference	RTV656
Uncured Properties
Consistency	Flowable
Color	White
Specific Gravity	1.02
Pot Life	4 hours
Cure Time (@ 50% RH)
25�C (77�F)	7 days
65�C (149�F)	4 hours
100�C (212�F)	1 hour
125�C (256�F)	45 minutes
150�C (302�F)	15 minutes
Useful Temp. Range	-115�C to 204�C (-175�F to 400�F)
Cured Properties - MECHANICAL
Hardness	44 (Shore A)
Cured Properties - ELECTRICAL
Volume Resistivity	3.2 x 10¹⁵ ohm � cm
Dielectric Strength	19.7 kV/mm (500 V/mil)
Dielectric Constant	2.89 @ 1000 Hz
Cured Properties - THERMAL
Thermal Conductivity	0.19 W/m � �K
Thermal Expansion	27 x 10^-5 cm/cm �C
	(15.3 x 10^-5 in/in �F)
Other
Viscosity (@ 25�C)	4,000 cps
Mix Ratio (by weight)	10:1

Return to top

web site design by offbeat studio