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Loctite France

10 Avenue Eugene GazeauBP40090 - 60304 Senlis CedexTel. : 03.44.21.66.00 - Fax: 03.44.53.49.58

SHEET

TECHNICAL INFORMATION

SILICOMET AS 312

Creation dateand modifications

MMR / AMM03/22/91

DT25/02/98

DT03/98

DT / AB24/01/00

PRODUCT DESCRIPTIONProduct Silicomet AS 312 is an adhesive elastomerone-component silicone, non-flowing, polymerizingat room temperature. It is designed specificallyfor professional use. It is usually usedas a sealant at the same time abonding and high temperature protection.

TYPICAL APPLICATIONSIt is designed for bonding and sealing in variousindustries: automotive, household electrical equipmentand aviation industry.

PROPERTIES OF LIQUID

Typical ValueChemical nature Silicone aceticColor BlackDensity at 25 C 1.04Extrusion Rate, g / min,(Nozzle of 3 mm to 6 bar and 25 C) 100Flash Point (TCC), C > 100

TYPICAL CURINGSurface polymerizationThe surface of this adhesive becomes dry to the touch in 5minutes when exposed to atmospheric moisture50 5% relative humidity and 23 2 C. The curve belowBelow is the cured depthfunction of time, under the same conditions.

Hours

mm

0 6 12 18 240

1

2

3

4

5

TYPICAL PROPERTIES OF CURED MATERIALMaximum temperature in C at which the productretains 50% of its strength at room temperature:After 72 h 300

Electrical propertiesDielectric strength, ASTM D 149, kV / mm 20Dielectric constant, ASTM D150Measure 1 MHz 3Volume resistance, ASTM D 257 cm 2 x 10 15

PERFORMANCE OF CURED MATERIAL(After 7 days at 23 2 C and 50 5% humidityrelative)

Valuetypical

Tensile strength, MPa 2.0Elongation, ASTM D 412, % 425Hardness, ASTM D 2240, Shore A 24

Resistance to oil immersionThe tests were made with 10W30.

Duration of immersion inoil at 150 C Control

After72 h

After350 h

Volume change % 0 25 25Hardness Shore A 26 7 5100% moduluselongation MPa

0.6 0.32 0.27

Tensile strength MPa 2.2 1.5 1.3Elongation at break % 450 580 560

Resistance to antifreezeThe tests were done after holding 7 daysantifreeze boiling.

Immersion in antifreeze to 100 C ControlAfter 7

daysVolume change % 0 2.8Hardness Shore A 26 23Modulus at 100% elongation MPa 0.58 0.54Tensile strength MPa 2.2 2.2Elongation at break % 435 450

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