Dirko™ HT (red)

Dirko™ HT red (acetic curing) is a high-quality, high temperature resistant single component silicone-based sealing compound that exhibits permanently resilient properties. It provides excellent adhesion on all standard metals, cast iron, plastics (except for PE, PP and PTFE) and glass. Due to a reaction with humidity in the air Dirko™ HT red cures to form silicone. The product can be used for a very wide range of applications.


1. General product infomation

  • Chemical basis - Acetoxy silicone
  • Curing - Room temperature vulcanised (RTV)
  • Components - Single component
  • Colour - Red
  • Consistency - Pasty, stable, permanently resilient when cured
  • Temperature range - -60°C to +300°C (for 24h up to +315°C)
  • Maximum sealing gap - 2,0 mm
  • pH value - Neutral
  • Electrical conductivity - Insulating
  • Resistant to - Mineral oils (including additives), synthetic oils, Lubricating grease, Coolants, UV radiation , cold and hot water, salt water , cleaning agents, weak acids and alkalis
  • Possible applications - valve cover, oil pan , water pump , oil pump , diff, rential housing , gearbox, gear oil sump , thermostat housing , control housing , axle cover, lange connection , headlights, rear light , battery compartment

2. Technical data

2.1 General properties

Measured variable

Value

Test standard

Shore A hardness

30 ± 5

DIN 53505

Density

1,1 ± 0,2 g/ml

DIN 53479

Skin formation time (23°C, 50% relative humidity)

5 - 10 min

DIN EN ISO 291

Curing time (23°C, 50% relative humidity)

ca. 4,5 mm / 24 h

DIN EN ISO 291

Elastic modulus 100%

0,6 ± 0,2 N/mm²

DIN EN ISO 8339

Elongation at break

600 ± 100 %

DIN 53504

Tensile strength

2,9 ± 0,2 N/mm²

DIN 53504

2.2 Media resistance

To demonstrate the media resistance of the sealing compound, the test specimens are stored in the relevant medium for the specified duration. The tensile shear strength is then determined (ISO 4587). The following table shows the percentage variation in the tensile shear strength from the initial value without the influence of the medium.

 

Medium

 

Property

 

Temperature (°C)

Variation from initial value (%)

250 h

500 h

1000 h

 

Air

Elongation at break (%)

 

250

 

-2

 

4

 

31

Tensile strength (N/mm²)

 

250

 

44

 

43

 

32

Elongation at break (%)

 

285

 

50

 

62

 

83

Tensile strength (N/mm²)

 

285

 

1

 

-15

 

-20

Engine oil

Elongation at break (%)

 

120

 

21

 

33

 

45

Tensile strength (N/mm²)

 

120

 

-9

 

-15

 

-50

Water / glycol (50/50)

Elongation at break (%)

 

95

 

1

 

11

 

-12

Tensile strength (N/mm²)

 

95

 

84

 

87

 

69

2.3 Curing rate

The curing rate depends on the temperature and humidity. The higher the temperature and the humidity, the faster Dirko™ HT red cures to form silicone. The lower diagram shows the progression of the curing rate over time in a standard climate (23°C/50% relative humidity).

2.4Surface adhesion

The adhesion of Dirko™ HT red on different surfaces plays a crucial role in its use as a surface seal. The following figures show the measured tensile shear strength for a sealing gap of 1 mm (ISO 4587).

Surface

Tensile shear strength [N/mm²]

Steel (galvanised)

0,90

Aluminium

2,00

Polyamide 6.6

0,60


3. General information

3.1. Usage and processing instructions:

  • Remove sealant residues and clean the sealing surfaces with solvent.
  • Sealing surfaces must be clean, dry, and free of oil or grease before applying the sealing
    compound in order to ensure reliable sealing and adhesion.
  • Processing temperature (ambient / adhesion surface temperature): +5 to +35°C
  • Apply the sealing compound evenly across the entire surface.
  • Immediately remove any excess sealing compound applied, as there is a risk that it could
    drip into the interior.
  • Depending on the application, the parts can be fitted immediately after application, after
    skin formation or after complete curing.
  • Fit the components in line with the manufacturer’s specifications.
  • The sealing function is immediate.
  • After use, reseal the sealing compound securely.
  • Safety and technical data sheet at www.elring.com

3.2. Storage

  • Optimum storage conditions: Cool (+5°C to +25°C) and dry location
  • Minimum shelf life: 24 months in unopened containers. .
    Seal opened containers securely and use up as soon as possible..
  • The batch number has the following structure: YYWWCCCCC (filling date)

3.3. Delivery form

Item no.

Package content

Volume

colour

Packaging unit

705.708

Tube, Tube key, nozzle

70 ml

Red

12 units

465.766

nozzle, Compressed gas cartridge

200 ml

Red

12 units

3.4. Exclusion of liability

The above specifications in this technical data sheet, in particular the suggestions for processing and usage of our products, are based on our current knowledge and experience. As a result of the varied possible uses and the fact that the usage and working conditions are outside our area of influence, we accept no liability for the suitability of our products for a particular production process under specific working conditions, or for the intended processing purposes and results. To ensure suitability, we recommend that adequate independent trials and tests are always performed in advance.
Any liability resulting from the information in this technical data sheet and from other written or verbal advice for the product in question is explicitly excluded, unless a case of injury, death or health problems arises that is due to intent or gross negligence on our part, or we are subject to liability under mandatory product liability law.

This article is based on service information "Dirko™ HT (red)"

Selection of items

General information

Code:705.708
Brand: ELRING
Name:Sealing Substance
Vehicle:UNI Dirko HT 70ml

Criteria


Chemical Properties: Permanently elastic
Chemical Properties: not solvent-bearing
Chemical Properties: UV resistant
Packing Type: Tube
Contents [ml]: 70 ml
Material: Silicone
Temperature range from [°C]: -60 °C
Temperature range to [°C]: 315 °C
Colour: Red

Price

Netto price:

$6.10

($6.10 excl. VAT 0%)

Your price: (-25%)

$4.58

($4.58 excl. VAT 0%)

Stock: > 25 pcs
We recommend! 

UNI Dirko HT 70ml
705.708, Sealing Substance, Sealing compound, ELRING, UNI Dirko HT 70ml, 00295-01281, 109660, 70-31414-10, 7711236470, 99000-31280-000, A0049890820, HT250C, KP710-00150, MD974421, 93691-80030-000, 93691-80030

General information

Code:465.766
Brand: ELRING
Name:Sealing Substance

Criteria


Chemical Properties: Permanently elastic
Chemical Properties: UV resistant
Chemical Properties: not solvent-bearing
Packing Type: Cartridge
Contents [ml]: 310 ml
Material: Silicone
Temperature range from [°C]: -60 °C
Temperature range to [°C]: 315 °C
Colour: Red

Price

Netto price:

$19.00

($19.00 excl. VAT 0%)

Your price: (-25%)

$14.25

($14.25 excl. VAT 0%)

Stock: 0 pcs
External stock: Check
New 2020/11 

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