ELASTOSIL® RT 622 A/B

WACKER

low viscosity
medium-hard vulcanizates
Rail: EN 45545-2 up to HL2

CHF 77.30*

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Available immediately

ELASTOSIL® RT 622 A/B

1 kg set RT 622 A/B P/N 60080694

5 kg set RT 622 A/B P/N 60080695

Technical data sheet / Safety data sheet

Product number: 60080694

Data sheets

Available downloads Technical Data Sheet / Safety Data Sheet

Product information "ELASTOSIL® RT 622 A/B"

ELASTOSIL® RT 622 A/B is an addition-curing two-part silicone potting compound (9:1) for fire protection applications in rail vehicles according to EN 45545-2:2020 (HL1–HL2). It has low viscosity and produces medium-hard vulcanizates. Pot life approx. 60 min, hardness approx. 27 Shore A.

Properties Uncured

Property	Condition	A	B	Method
Color	-	white	reddish brown	-
Density	23.0 °C	-	0.97 g/cm³	DIN EN ISO 2811-1
Viscosity, dynamic^[1]	23.0 °C	18000.0 mPa·s	800.0 mPa·s	DIN EN ISO 2555

¹ Spindle 1; 2,5 UpM; 23°C
These figures are only intended as a guide and should not be used in preparing specifications.

Properties Catalyzed A+B

Property	Condition	Value	Method
Viscosity, dynamic^[1]	23.0 °C	12000.0 mPa·s	DIN EN ISO 2555
Mix ratio^[2]	-	9 : 1	A : B
Pot life^[3]	-	60 min	-
Curing time at 23°C	-	12.0 h	-

¹ Spindle 5; 2,5 UpM; 23°C
² (pbw)
³ at 23 °C, up to 60000 mPa s
These figures are only intended as a guide and should not be used in preparing specifications.

Properties Cured
Cure conditions: 5 min / 165 °C in press

Property	Condition	Value	Method
Color	-	reddish brown	-
Density	23.0 °C	1.0 g/cm³	DIN EN ISO 1183-1 A
Tear strength	-	30 N/mm	ASTM D 624 B
Hardness Shore A	-	27	DIN ISO 48-4
Tensile strength	-	6.5 N/mm²	ISO 37 type 1
Elongation at break	-	550 %	ISO 37 type 1
Linear shrinkage	-	< 0.1 %	-

These figures are only intended as a guide and should not be used in preparing specifications.

Disclaimer

All the information provided is in accordance with the present state of our knowledge. Nonetheless, we disclaim any warranty or liability whatsoever and reserve the right, at any time, to effect technical alterations. The information provided, as well as the product's fitness for an intended application, should be checked by the buyer in preliminary trials. Contractual terms and conditions always take precedence. This disclaimer of warranty and liability also applies particularly in foreign countries with respect to third parties' rights.

Colour:	Reddish brown
Dielectric constant:	3.2 / 50 Hz [εr]
Max. temp. °C:	200°C
Properties:	High mechanical strength
Shore A:	27
Silicone product groups:	Potting compounds
Silicone system:	RTV-2 addition-curing
Thermal conductivity:	0,2 [W/mK]
Viscosity [mPa·s] D=0.5–1 1/s:	10'000 - 20'000
Volume resistivity:	10¹⁵ Ohmcm

Fire protection in rail vehicles to EN 45545-2:2020: HL1 (R22) and HL1 and HL2 (R23, R24)
Potting of electronics and electrics in rail technology
Electrical insulation (volume resistivity 10¹⁵ Ω·cm)
Applications at temperatures up to +200 °C

Suitable for: rail technology, electronics and electrical engineering

Frequently asked questions

Which fire protection standard does ELASTOSIL RT 622 meet?
The railway standard EN 45545-2:2020: hazard level HL1 according to requirement set R22, and HL1 and HL2 according to requirement sets R23 and R24. The manufacturer does not state a UL 94 rating for this product.

How is the compound processed?
In a 9:1 ratio (A:B), pot life approx. 60 minutes, hardness approx. 27 Shore A.