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Silopren™ LSR 2640

Chemical Family
Silicones

Silopren™ LSR 2640 is a two-component liquid silicone rubber for injection molding processes. In comparison to Silopren™ LSR 2040, Silopren™ LSR 2640 shows a lower viscosity, improved tear resistance and a higher reactivity. Therefore, it is also possible to reduce the vulcanization temperature while maintaining a standard crosslinking rate. The increased reactivity does not affect the properties of the vulcanizate.Key Features and BenefitsVulcanizates of Silopren™ LSR 2640 are typically distinguished by the following properties: High reactivity, lower viscosity, shorter cycle time Excellent thermal stability Biocompatible Sterilizable with ethylene oxide, steam and gamma radiation High stability and flexibility at low temperatures Good rubber-like properties, high tear resistance Long service life at dynamic stress High stability to ozone and ultraviolet light Outstanding resistance to aging Excellent dielectric behavior over a wide range of temperatures Not readily combustible, does not melt or drip Easily pigmentable with LSR color pastes KTW approved Potential ApplicationsBecause of its outstanding properties, Silopren™ LSR 2640 is an excellent candidate to consider for the following elastomeric articles: Sealing elements O-rings Stoppers Diaphragms Keypads Bellows Catheters Pacifiers Baby teats Respiratory devices Vibration dampers Air vent flaps Switch cover Breast shields Nose pads Cable connectors Parts of medical technical equipment.

Properties

Physical Form
Liquid

Product families

Applications

Applications
  • Consumer Goods — Other Consumer Goods Applications
Healthcare & Pharma — Medical
  • Medical Devices & Assemblies
  • Other Medical Applications
  • Surgical Instruments & Trays
  • Tubing & Fluids Handling
Electrical & Electronics — Parts & Components
  • Connectors

Product Families

Elastomers — Specialty Elastomers
  • Silicone Elastomers

Other characteristics

Brand
Silopren
End Uses

Connectors, Medical Devices, Medical/Healthcare Applications, Pacifiers, Surgical Instruments, Tubing

Features

Biocompatible, Ethylene Oxide Sterilizable, Good Colorability, Good Stability, Good Tear Strength, Good Thermal Stability, High Reactivity, Low Temperature Flexibility, Ozone Resistant, Radiation Sterilizable, Steam Sterilizable, UV Resistant, Vibration Damping

Polymer Name
Liquid Silicone Rubber (LSR)
Tear Strength
40.0 - 40.0 kN/m
Processing Methods
Injection Molding
Markets
  • Consumer Goods
  • Electrical & Electronics
  • Healthcare & Pharma
Appearance
Translucent
Flame Rating
IEC 60695-11-10 HB
Technology
Elastomers
Material Features
  • Biocompatible
  • Ethylene Oxide Sterilizable
  • Good Colorability
  • Good Stability
  • Good Tear Strength
  • Good Thermal Stability
  • High Reactivity
  • Low Temperature Flexibility
Country Availability
  • Brazil
  • Canada
  • China (Mainland)
  • Mexico
  • USA
Plastics and Elastomers End Uses
  • Connectors
  • Medical Devices
  • Medical/Healthcare Applications
  • Pacifiers
  • Surgical Instruments
  • Tubing
Plastics and Elastomers Processing Methods
Injection Molding

Technical data

Table 1 of 3

4 rows
CharacteristicValueUnitMethod
Tensile Strength8MPaISO 37
Hardness42Shore AASTM D 2240
Strain at break600%ISO 37
Tear Strength40kN/mISO 34-1

Table 2 of 3

1 row
CharacteristicValueUnitMethod
Density1120kg/m3ISO 1183

Table 3 of 3

2 rows
CharacteristicValueUnitMethod
Burning Behavior at 1.5 mm nominal thicknessHBclassIEC 60695-11-10
Yellow Card availableyes——

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