ELASTOSIL® R plus 4370/40

ELASTOSIL® R plus 4370/40 is an addition-curing, self-bonding two-component high consistency silicone rubber for the manufacture of extruded articles.



Properties

ELASTOSIL® R plus 4370/40 is a self-adhesive grade which adheres to various plastic substrates (e.g. PA, PBT) and metals without tack formation to the mold. The bonding properties can be improved by a post-curing process (e.g. one hour at 100 °C) or by a longer storage at room temperature. Because of the individual surface properties each substrate must be tested before serial production. The vulcanizates are transparent and noted for good mechanical and electrical properties. Thanks to addition cure, the vulcanization reaction is significantly faster compared to peroxide curing materials. No peroxide decomposition products are formed during vulcanization.
At service temperatures above approx. 180 °C the addition of heat stabilizers is recommended. Further information about an improvement of the heat stability by use of specific ELASTOSIL® AUX Heat Stabilizers can be obtained from the Technical Information Sheet "ELASTOSIL® AUX Stabilizers H" or the latest edition of our brochures.

Specific features of ELASTOSIL® R plus 4370/40

  • Crosslinking Property: Addition Curing
  • Crosslinking Property: Two-component
  • Product Type: Two-component
  • Specific Features: Addition Curing
  • Specific Features: Self-adhesive
  • Specific Features: Two-component
  • Vulcanizate: Self-adhesive

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.

ELASTOSIL® R plus 4370/40 is suited for the manufacture of 2-composite combinations via pressure free extrusion or co-extrusion.

ELASTOSIL® R plus 4370 may not be cured with peroxides but only with the platinum catalyst batch ELASTOSIL® AUX Batch PT 1. ELASTOSIL® R plus 4370/40 and ELASTOSIL® AUX Batch PT 1 are mixed homogeneously on a roll mill in a ratio of 100:1.5. A higher catalyst dosage results in a faster curing but a reduced pot life. Care must be taken to keep the compound cool during mixing. A homogeneous incorporation is a must, but the temperature of the rubber should not exceed 30 °C, otherwise there is a risk of scorch.
The cross linking reaction starts as soon as ELASTOSIL® AUX Batch PT 1 has been added. The rate and degree of crosslinking is dependent on storage time and temperature. At 23 °C the pot life is approximately 24 h. This can be extended by storing the catalyzed mixture at lower temperature.
For detailed information please refer to the latest edition of our brochure "SOLID AND LIQUID SILICONE RUBBER - MATERIAL AND PROCESSING GUIDELINES".

Packaging

This product is available in 20 kg and 540 kg cardboard packaging.
Special delivery forms are possible but depend on several technical and commercial aspects. Please contact your local sales manager in such cases.

Storage

Please store the cardboard boxes in a dry and cool place. Once opened, cardboard boxes should always be resealed after use to prevent the platinum catalyst from being poisoned by amines, sulphur or phosphorus compounds. The 'Best use before end' date of each batch is shown on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

Sales and support

Wacker Chemical Corporation
3301 Sutton Road
Adrian, MI 49221-9397
United States
+1  888  922-5374 (Phone)
Contact

How can we help you?

  • Do you need help in choosing a product or do you require technical support? If so, please contact our experts.
Ask a question

Would you like a product sample?

You can request a product sample here.

Request sample

More products

Products Technical data
Appearance Hardness Shore A Tensile strength Elongation at break Tear strength Compression Set
ELASTOSIL® R 401/10 OH transparent transparent 13[1] 13[1] 6.00 N/mm²[2] 6.00 N/mm²[2] 1200 %[3] 1200 %[3] 24 N/mm[4] 24 N/mm[4] 41 %[5] 41 %[5]
ELASTOSIL® R 401/20 OH transparent transparent 23[1] 23[1] 9.0 N/mm²[2] 9.0 N/mm²[2] 1000 %[3] 1000 %[3] 27 N/mm[4] 27 N/mm[4] 33 %[5] 33 %[5]
ELASTOSIL® R 401/30 OH transparent transparent 34[1] 34[1] 10.0 N/mm²[2] 10.0 N/mm²[2] 720 %[3] 720 %[3] 22 N/mm[4] 22 N/mm[4] 20 %[5] 20 %[5]
ELASTOSIL® R 401/30 S transparent transparent 33[1] 33[1] 10 N/mm²[2] 10 N/mm²[2] 800 %[3] 800 %[3] 24 N/mm[4] 24 N/mm[4] 15 %[5] 15 %[5]
ELASTOSIL® R 401/40 S transparent transparent 41[1] 41[1] 11.0 N/mm²[2] 11.0 N/mm²[2] 730 %[3] 730 %[3] 28 N/mm[4] 28 N/mm[4] 16 %[5] 16 %[5]
ELASTOSIL® R 401/50 S transparent transparent 52[1] 52[1] 12.0 N/mm²[2] 12.0 N/mm²[2] 640 %[3] 640 %[3] 29 N/mm[4] 29 N/mm[4] 17 %[5] 17 %[5]
ELASTOSIL® R 401/55 S transparent transparent 55[1] 55[1] 11.0 N/mm²[2] 11.0 N/mm²[2] 470 %[3] 470 %[3] 23 N/mm[4] 23 N/mm[4] 35 %[5] 35 %[5]
ELASTOSIL® R 401/60 KX transparent transparent 61[1] 61[1] 11.0 N/mm²[2] 11.0 N/mm²[2] 460 %[3] 460 %[3] 25 N/mm[4] 25 N/mm[4] 25 %[5] 25 %[5]
ELASTOSIL® R 401/60 S transparent transparent 62[1] 62[1] 11.0 N/mm²[2] 11.0 N/mm²[2] 530 %[3] 530 %[3] 26 N/mm[4] 26 N/mm[4] 16 %[5] 16 %[5]
ELASTOSIL® R 401/70 S transparent transparent 71[1] 71[1] 11.0 N/mm²[2] 11.0 N/mm²[2] 530 %[3] 530 %[3] 31 N/mm[4] 31 N/mm[4] 22 %[5] 22 %[5]
ELASTOSIL® R 401/80 S transparent transparent 81[1] 81[1] 10.0 N/mm²[2] 10.0 N/mm²[2] 430 %[3] 430 %[3] 26 N/mm[4] 26 N/mm[4] 41 %[5] 41 %[5]
ELASTOSIL® R 401/90 OH transparent transparent 89[1] 89[1] 7.4 N/mm²[2] 7.4 N/mm²[2] 160 %[3] 160 %[3] 14 N/mm[4] 14 N/mm[4] 19 %[5] 19 %[5]
ELASTOSIL® R 402/65 OH transparent transparent 66[1] 66[1] 11.0 N/mm²[2] 11.0 N/mm²[2] 430 %[3] 430 %[3] 24 N/mm[4] 24 N/mm[4] 29 %[5] 29 %[5]
ELASTOSIL® R 402/75 S transparent transparent 74[1] 74[1] 9.3 N/mm²[2] 9.3 N/mm²[2] 490 %[3] 490 %[3] 24 N/mm[4] 24 N/mm[4] 70 %[5] 70 %[5]
ELASTOSIL® R 420/30 OH transparent transparent 29[1] 29[1] 10.0 N/mm²[2] 10.0 N/mm²[2] 930 %[3] 930 %[3] 33 N/mm[4] 33 N/mm[4] 18 %[5] 18 %[5]
ELASTOSIL® R 420/40 S transparent transparent 43[1] 43[1] 10.0 N/mm²[2] 10.0 N/mm²[2] 800 %[3] 800 %[3] 37 N/mm[4] 37 N/mm[4] 24 %[5] 24 %[5]
ELASTOSIL® R 420/50 S transparent transparent 53[1] 53[1] 11.0 N/mm²[2] 11.0 N/mm²[2] 730 %[3] 730 %[3] 41 N/mm[4] 41 N/mm[4] 23 %[5] 23 %[5]
ELASTOSIL® R 420/60 S transparent transparent 62[1] 62[1] 11.0 N/mm²[2] 11.0 N/mm²[2] 660 %[3] 660 %[3] 43 N/mm[4] 43 N/mm[4] 25 %[5] 25 %[5]
ELASTOSIL® R 420/70 S transparent transparent 72[1] 72[1] 10.0 N/mm²[2] 10.0 N/mm²[2] 570 %[3] 570 %[3] 45 N/mm[4] 45 N/mm[4] 38 %[5] 38 %[5]
ELASTOSIL® R 490/55 OH transparent transparent 53[1] 53[1] 11.0 N/mm²[2] 11.0 N/mm²[2] 520 %[3] 520 %[3] 30 N/mm[4] 30 N/mm[4] 28 %[5] 28 %[5]
ELASTOSIL® R 573/50 A/B black black 50[1] 50[1] 5.5 N/mm²[2] 5.5 N/mm²[2] 340 %[3] 340 %[3] 13 N/mm[4] 13 N/mm[4] 30 %[6] -
ELASTOSIL® R 573/70 A/B black black 71[1] 71[1] 6.2 N/mm²[2] 6.2 N/mm²[2] 246 %[3] 246 %[3] 14 N/mm[4] 14 N/mm[4] 29 %[6] -
ELASTOSIL® R 750/40 OH translucent translucent 38[1] 38[1] 10.5 N/mm²[2] 10.5 N/mm²[2] 630 %[3] 630 %[3] 26 N/mm[4] 26 N/mm[4] 26 %[5] 26 %[5]
ELASTOSIL® R 750/50 OH translucent translucent 48[1] 48[1] 10.5 N/mm²[2] 10.5 N/mm²[2] 530 %[3] 530 %[3] 26 N/mm[4] 26 N/mm[4] 20 %[5] 20 %[5]
ELASTOSIL® R 750/60 OH translucent translucent 56[1] 56[1] 8.1 N/mm²[2] 8.1 N/mm²[2] 460 %[3] 460 %[3] 23 N/mm[4] 23 N/mm[4] 14 %[5] 14 %[5]
ELASTOSIL® R 756/40 OH transparent transparent 41[1] 41[1] 8.8 N/mm²[2] 8.8 N/mm²[2] 610 %[3] 610 %[3] 20 N/mm[4] 20 N/mm[4] 9 %[5] 9 %[5]
ELASTOSIL® R 756/50 OH transparent transparent 47[1] 47[1] 9.5 N/mm²[2] 9.5 N/mm²[2] 540 %[3] 540 %[3] 21 N/mm[4] 21 N/mm[4] 9 %[5] 9 %[5]
ELASTOSIL® R 756/60 OH transparent transparent 59[1] 59[1] 10.0 N/mm²[2] 10.0 N/mm²[2] 440 %[3] 440 %[3] 23 N/mm[4] 23 N/mm[4] 9 %[5] 9 %[5]
ELASTOSIL® R 756/70 OH transparent transparent 70[1] 70[1] 10.0 N/mm²[2] 10.0 N/mm²[2] 380 %[3] 380 %[3] 24 N/mm[4] 24 N/mm[4] 10 %[5] 10 %[5]
ELASTOSIL® R 771/60 OH - - 60[1] 60[1] 3.4 N/mm²[2] 3.4 N/mm²[2] 410 %[3] 410 %[3] 16 N/mm[4] 16 N/mm[4] - -
ELASTOSIL® R 771/70 OH - - 70[1] 70[1] 4.0 N/mm²[2] 4.0 N/mm²[2] 270 %[3] 270 %[3] 18 N/mm[4] 18 N/mm[4] - -
ELASTOSIL® R 861/60 S translucent translucent 60[1] 60[1] 8.4 N/mm²[2] 8.4 N/mm²[2] 390 %[3] 390 %[3] 18 N/mm[4] 18 N/mm[4] 6 %[5] 6 %[5]
ELASTOSIL® R 861/70 S translucent translucent 73[1] 73[1] 8.6 N/mm²[2] 8.6 N/mm²[2] 290 %[3] 290 %[3] 17 N/mm[4] 17 N/mm[4] 8 %[5] 8 %[5]
ELASTOSIL® R plus 4303/60 transparent transparent 60[1] 60[1] 9.6 N/mm²[2] 9.6 N/mm²[2] 650 %[3] 650 %[3] 38 N/mm[4] 38 N/mm[4] 12 %[5] 12 %[5]
ELASTOSIL® R plus 4303/70 transparent transparent 70[1] 70[1] 9.0 N/mm²[2] 9.0 N/mm²[2] 600 %[3] 600 %[3] 37 N/mm[4] 37 N/mm[4] 16 %[5] 16 %[5]
ELASTOSIL® R plus 4303/80 transparent transparent 80[1] 80[1] 7.7 N/mm²[2] 7.7 N/mm²[2] 300 %[3] 300 %[3] 20 N/mm[4] 20 N/mm[4] 16 %[5] 16 %[5]
ELASTOSIL® R plus 4305/30 transparent transparent 30[1] 30[1] 11.8 N/mm²[2] 11.8 N/mm²[2] 1100 %[3] 1100 %[3] 43 N/mm[4] 43 N/mm[4] 8 %[5] 8 %[5]
ELASTOSIL® R plus 4305/40 transparent transparent 40[1] 40[1] 9.8 N/mm²[2] 9.8 N/mm²[2] 830 %[3] 830 %[3] 27 N/mm[4] 27 N/mm[4] 7 %[5] 7 %[5]
ELASTOSIL® R plus 4305/50 transparent transparent 50[1] 50[1] 8.8 N/mm²[2] 8.8 N/mm²[2] 770 %[3] 770 %[3] 35 N/mm[4] 35 N/mm[4] 7 %[5] 7 %[5]
ELASTOSIL® R plus 4305/60 S transparent transparent 57[1] 57[1] 9.9 N/mm²[2] 9.9 N/mm²[2] 630 %[3] 630 %[3] 41 N/mm[4] 41 N/mm[4] 13 %[5] 13 %[5]
ELASTOSIL® R plus 4305/70 transparent transparent 70[1] 70[1] 9.1 N/mm²[2] 9.1 N/mm²[2] 600 %[3] 600 %[3] 39 N/mm[4] 39 N/mm[4] 14 %[5] 14 %[5]
ELASTOSIL® R plus 4305/80 transparent transparent 80[1] 80[1] 7.8 N/mm²[2] 7.8 N/mm²[2] 310 %[3] 310 %[3] 21 N/mm[4] 21 N/mm[4] 17 %[5] 17 %[5]
ELASTOSIL® R plus 4305/90 transparent transparent 90[1] 90[1] 6.4 N/mm²[2] 6.4 N/mm²[2] 150 %[3] 150 %[3] 17 N/mm[4] 17 N/mm[4] 30 %[5] 30 %[5]
ELASTOSIL® R plus 4350/55 tranlucent tranlucent 58[1] 58[1] 8.2 N/mm²[2] 8.2 N/mm²[2] 350 %[3] 350 %[3] 18 N/mm[4] 18 N/mm[4] 10 %[5] 10 %[5]
ELASTOSIL® R plus 4360/60 MH translucent translucent 60[1] 60[1] 8.4 N/mm²[2] 8.4 N/mm²[2] 380 %[3] 380 %[3] 14 N/mm[4] 14 N/mm[4] 10 %[5] 10 %[5]
ELASTOSIL® R plus 4366/60 transparent transparent 60[1] 60[1] 7.6 N/mm²[2] 7.6 N/mm²[2] 550 %[3] 550 %[3] 41 N/mm[4] 41 N/mm[4] 20 %[5] 20 %[5]
ELASTOSIL® R plus 4370/40 translucent translucent 40[1] 40[1] 10.9 N/mm²[2] 10.9 N/mm²[2] 1000 %[3] 1000 %[3] 39 N/mm[4] 39 N/mm[4] 43 %[7] -
ELASTOSIL® R plus 4370/50 translucent translucent 48[1] 48[1] 10.6 N/mm²[2] 10.6 N/mm²[2] 900 %[3] 900 %[3] 42 N/mm[4] 42 N/mm[4] 43 %[7] -
Legend
[1] Hardness Shore A | DIN ISO 48-4,  [2] Tensile strength | ISO 37 type 1,  [3] Elongation at break | ISO 37 type 1,  [4] Tear strength | ASTM D 624 B,  [5] Compression Set | 22 h | 175 °C | DIN ISO 815-1 type B method A | post-cured 4 h / 200 °C,  [6] Compression Set | 22 h | 175 °C | DIN ISO 815-1 type B method A | post-cured 0.5 h / 200 °C,  [7] Compression Set | 22 h | 175 °C | DIN ISO 815-1 type B method A 

Order

My media


My favorites

My products