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Plastics & Elastomers
The material selection platform
Plastics & Elastomers
by SpecialChem
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Technical Datasheet | Supplied by Wacker
ELASTOSIL® R 865/40 by Wacker is a high consistency silicone rubber. Exhibits superior rebound resiliency and minimal compression set. It is virtually insoluble in water. It is suitable for processing by extrusion and calendering. ELASTOSIL® R 865/40 is recommended for cables, calendered parts, automotive, technical, hoses/ turbocharger hoses, membranes, molded seals and roller applications.
Product Type
Silicone Rubber
CAS Number
Physical Form

ELASTOSIL® R 865/40 Properties

Mechanical Properties

Value & Unit
Test Condition
Test Method
Tensile Strength
7.5 N/mm2
(Cured:15 min, 165°C, Post Cured: 4h, 200°C)
DIN 53504 S 1
Rebound Resilience
71 %
(Cured:15 min, 165°C, Post Cured: 4h, 200°C)
DIN 53512
Tear Strength
15 N/mm
(Cured:15 min, 165°C, Post Cured: 4h, 200°C)
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