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Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
SiSiB® LR9910
SiSiB® LR9910

LSR for Foaming

SiSiB® LR9910 is a two-component liquid silicone rubber (LSR) with a 1:1 mixing ratio. It features rapid vulcanization and is used in the calendering process to mold silicone foam sheet materials.

SiSiB® LR9910

Technical Data


Property

Typical Value

Test Method

Appearance A

Light yellow

Visual

Appearance B

Black / Dark grey

Visual

Viscosity A (mPa·s)

9.0×104 -13.0×104

DIN 53019

Viscosity B (mPa·s)

9.0×104 -13.0×104

DIN 53019

Mixing Ratio (A:B)

1:1


Cured Properties


(Test specimen cured at 50°C × 30 min + 180°C × 60 min)


Property

Typical Value

Test Method

Density (g/cm³)

0.32 – 0.38

ASTM D792

Hardness (Shore A)

24 – 28

ASTM D2240

Tensile Strength (kPa)

> 300

ASTM D412

Elongation at Break (%)

> 90

ASTM D412

Tear Strength (kN/m)

> 1.0

ASTM D624 (B)

Water Absorption, 24 h (%)

< 5.0

Internal Test

Flammability

V0 / V1

UL 94

Compression Set (%)

< 5.0

ASTM D1056 **

**ASTM D1056 Test D (50% × 24 h × 100°C)

Above values are typical data and should not be used as specification.

Application


  • SiSiB® LR9110 is designed for lightweight silicone foam components requiring reliable sealing, cushioning, and flame-retardant performance. The cured foam combines low density with stable elastic recovery and good compression set resistance, making it suitable for long-term sealing and shock-absorbing applications. It is particularly appropriate for electronic enclosure sealing systems, industrial cushioning elements, vibration-damping pads, and flame-retardant foam components used in both industrial and consumer products.

Packing and Storage


SiSiB® LR9110 is supplied as a two-component system (Part A and Part B).


Standard packaging:


  • Part A: 20 kg pail or 200 kg drum


  • Part B: 20 kg pail or 200 kg drum


Other packaging options are available upon request.


This document does not contain the product safety information required for safe use. Before handling, please refer to the product and safety data sheets, as well as container labels, for information on safe usage, physical hazards, and health risks. Safety Data Sheet is available on the website, from the distributor, or by contacting SiSiB customer service.

Documents

DownloadSiSiB® LR9910 Safety Data Sheet
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