Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
SiSiB® FSE9861
SiSiB® FSE9861

SiSiB® FSE9861 is a 60 Shore A, uncatalyzed fluorosilicone rubber offering excellent solvent, fuel, and oil resistance. It features high resiliency, low compression set, and strong mechanical properties, making it ideal for extrusion, calendering, or molding with enhanced chemical resistance and dimensional stability.

SiSiB® FSE9861

Features


  • Wide operating temperature range of -60°C to 230°C


  • Low compression set


  • Easily processed & easily pigmented


  • Excellent fuel and solvent resistance


  • High resilience and good tensile strength


  • Can be post-cured for improved properties


Physical Properties


Items

Result

Method

Density (g/cm3)

1.45

ASTM D792

Hardness (Shore A)

60

ASTM D2240

Tensile Strength (MPa)

10.2

ASTM D412

Elongation (%)

310

ASTM D412

Tear Strength (KN/m)

21

ASTM D624-B

Compression Set (177°C, 22h)

7.5

ASTM D395

Resilience (%)

40

ASTM D1054

Volume Change (Fuel C, 23°C, 72h) %

+18

ASTM D471

Heat Resistance (225°C, 72h)



Hardness change/shore A

+2

ASTM D573

Tensile strength change (%)

-23

ASTM D573

Elongation at break change (%)

-22

ASTM D573

Curing agent: 0.8 pbw 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane(DHBP).

Curing conditions: 10min/170°C, post-curing: 4h/200°C in hot air.

These values are not intended for use in preparing specifications.

Application


SiSiB® FSE9861 is ideal for the production of low compression set molded, extruded, and calendered parts, such as:


  • O-rings, gaskets, oil seals


  • Fuel-line quick-connect seals


  • Sealing strips, diaphragms, membranes


  • Valves, hydraulic and electrical clamp blocks


Thanks to its excellent fluid resistance and thermal stability, SiSiB® FSE9861 is widely used in the following industries:


  • Automotive


  • Aerospace


  • Petrochemical

Packing and Storage


SiSiB® FSE9861 fluorosilicone is supplied in 20kg boxes.


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.

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SiSiB® FSE9861