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Fluorosilicone rubber combines the advantages of silicone rubber and fluoro rubber:
1.Wide temperature range (long-term - 65 ℃- 200 ℃), up to 250 ℃ in short term;
2.Excellent resistance to fuel, engine oil, solvents and chemical media;
3.Lower tensile deformation and better vulcanization recovery ability;
4.It retains the advantages of high tensile retention rate of silicone rubber at high temperature;
5.Good insulation performance;
6.Has good selectional air permeability and meets the requirements of environmental protection;
7.Easy to color. It is suitable for high temperature, low temperature, oil and medium resistant applications.
Product application
1.Aviation Industry: seals and contacts of fuel oil and lubricating oil on aircraft, such as various O-rings, gaskets, sealing rings, sensor materials, diaphragms and fluorosilicon gaskets, can also be used for the overall sealing of aircraft fuel tank.
2.Automotive Industry: sealing rings, oil seals, diaphragms, conduits, valve linings, etc. for all kinds of vehicles.
3.Medical and health: used for medical instruments and artificial organs, such as catheters, drainage tubes, artificial valves, etc. 4.Military industry: it is used in harsh environments requiring low temperature resistance, oil resistance and acid resistance, such as the hydraulic system of military aircraft, infusion bellows, doors and windows, rear cover sealing strips and sensor materials for special vehicles.
5.Petrochemical Industry: all kinds of seals for pumps, valves, oil tanks and other equipment resistant to high temperature, low temperature.
Using method
Please mix the rubber several times before use it, adds 0.6~0.8 parts of vulcanizing agent, then mix and thin it for 4-6 times according to demand, and then storage 24 hours after rewinding, then mix and thin it for 3 times the thickness on the mould machine according to the requirement.
Packing and Storage
1. Packed with sealed bag, the net weight is 10kg per bag, two bags per carton.
2. It should be stocked in clean, ventilated and dry warehouse, the valid is for one year.
Note
1. The product has cold flow property, it should be avoided the packing broken in the transportation.
2. The product should be avoided contact with acidic or alkaline substances to keep neutral. Series
1.High Rebound (Low Compression set) F-HR series
2.Good Bonding F-GB series
3.High Tear Resistant F-HTR series
4.Extrusion F-ET series



Series of FVMQ rubber:
1.High Rebound (low compression set) F-HR series
2.Good Bonding F-GB series
3.High Tear Resistant F-HTR series
4.Extrusion F-ET series
High Rebound (Low compression set) F-HR series
Project | Test method | Performance index | |||||
Type |
| F-HR30 | F-HR40 | F-HR50 | F-HR60 | F-HR70 | F-HR80 |
Appearance | Visual | Translucent or grayish white, smooth surface, no impurities | |||||
Hardness (Shore A) | ASTMD2240 | 30± 5 | 40± 5 | 50±5 | 60±5 | 70±5 | 80± 5 |
Tensile strength (MPA) die C | ASTM D412 | 9.5 | 10.2 | 10.2 | 10.2 | 10.2 | 8.9 |
Elongation at break (%) die C | ASTM D412 | 430 | 410 | 355 | 332 | 270 | 205 |
Tear strength (KN / M) die B | ASTM D624 | 16 | 17 | 17 | 18 | 18 | 17 |
Compression set 177 ℃ 22hr (25%) type B | ASTM D395 | 6.0 | 6.1 | 6.1 | 6.3 | 6.8 | 6.9 |
Vertical resilience (%) | ASTM D2632 | 31 | 31 | 32 | 32 | 32 | 32 |
Volume change of reference fuel C (%) (23 ℃)×20h) | ASTM D471 | 17 | 17 | 17 | 17 | 17 | 17 |
Change rate of reference fuel C intensity (%) (23℃×72h) | ASTM D471 | -20 | -20 | -20 | -20 | -20 | -20 |
Change rate of elongation of reference fuel C (%)(23℃×72h) | ASTM D471 | -20 | -20 | -20 | -20 | -20 | -20 |
Change rate of heat resistance at 72 ℃ (H) | ASTM D573 | -17 | -17 | -17 | -17 | -17 | -17 |
Change in elongation of heat aging resistance (% (72h at 225 ℃) | ASTM D573 | -10 | -10 | -10 | -10 | -10 | -10 |
2.
Good Bonding F-GB series
Parameters:
Translucent or milky white adhesive fluorosilicone compound has good physical and processing properties, good resilience, fast vulcanization speed and good fluidity, and good adhesion with silicone rubber.
It is more suitable for making automotive rubber hose products.
Project | Test method | Performance index | |
Type |
| F-GB60 | F-GB70 |
Appearance | Visual inspection | Translucent or grayish white, smooth surface, no impurities | |
Hardness (Shore A) | ASTM D2240 | 60±5 | 70±5 |
Tensile strength (MPA) die C | ASTM D412 | 9.0 | 9.0 |
Elongation at break (%) die C | ASTM D412 | 350 | 330 |
Tear strength (KN / M) die B | ASTM D624 | 22 | 23 |
Compression set 177 ℃ 22hr (25%) type B | ASTM D395 | 11 | 11 |
Volume change of reference fuel C (%) (23℃×70hr) | ASTM D471 | 17 | 17 |
Intensity change of reference fuel C (%) (23℃×70hr) | ASTM D471 | -20 | |
Elongation change of reference fuel C (%) (23℃×70hr) | ASTM D471 | -20 | -20 |
Strength change rate of heat aging performance (%) (70 hours at 225 ℃) | ASTM D573 | -20 | -20 |
Elongation change rate of heat aging performance (%) (70 hours at 225 ℃) | ASTM D573 | -10 | -10 |
Adhesion to silica gel KN / M |
| 2.1 | 2.1 |
3.
High Tear Resistant F-HTR series
Parameters:
Translucent or milky white high tear resistant fluorosilicone compound has good physical and processing properties.
It has the characteristics of good tear resistance performance, fast vulcanization speed and good fluidity.
It is more suitable for making seal products with complex structure.
. Project |
Test method |
Performance index | ||||
Type |
| F-HTR40 | F-HTR50 | F-HTR60 | F-HTR70 | F-HTR80 |
Appearance | Visual inspection | Translucent or grayish white, smooth surface, no impurities | ||||
Hardness (Shore A) | ASTM D2240 | 40±5 | 50±5 | 60±5 | 70±5 | 80±5 |
Tensile strength (MPA) die C | ASTM D412 | 11.5 | 11.6 | 11.7 | 9.3 | 8.7 |
Elongation at break (%) die C | ASTM D412 | 483 | 420 | 392 | 322 | 183 |
Tear strength (KN / M) die B | ASTM D624 | 41 | 43 | 43 | 35 | 30 |
Compression set 177 ℃ 22hr (25%) type B | ASTM D395 | 13 | 14 | 16 | 17 | 20 |
Volume change of reference fuel C (%) (23℃×72h) | ASTM D471 | 17 | 17 | 17 | 17 | 17 |
Intensity change of reference fuel C (%)(23℃×72h) | ASTM D471 | -20 | -20 | -20 | -20 | -20 |
Elongation Change of reference fuel C (%)(23℃×72h) | ASTM D471 | -20 | -20 | -20 | -20 | -20 |
Strength change of heat aging resistance performance(%) (72 h at 225 ℃) | ASTM D573 | -20 | -20 | -20 | -20 | -20 |
Elongation change of heat aging resistance performance (%) (72 h at 225 ℃) | ASTM D573 | -20 | -20 | -20 | -20 | -20 |
4.
High Extrusion F-ET Series
Parameters:
Translucent or milky white high extrusion fluorosilicone compound has good physical and processing properties.
It has the characteristics of good resilience, fast vulcanization speed and good fluidity.
It is more suitable for making sealing strips and fluorosilicon hose.
Project | Test method | Performance index | |||
Type |
| F-ET50 | F-ET60 | F-ET70 | F-ET80 |
Appearance | Visual inspection | Translucent or grayish white, smooth surface, no impurities | |||
Hardness (Shore A) | ASTM D2240 | 50 ± 5 | 60 ± 5 | 70 ± 5 | 80 ± 5 |
Tensile strength (MPA) die C | ASTM D412 | 9.2 | 9.3 | 9.4 | 8.1 |
Elongation at break (%) die C | ASTM D412 | 337 | 293 | 273 | 173 |
Tear strength (kn/m) die B | ASTM d624 | 16 | 16 | 17 | 16 |
Compression set 177 ℃ 22hr (25%) type B | ASTM d395 | 7 | 8 | 9 | 9 |
Volume change of reference fuel C (%) (23 ℃×72h) | ASTM d471 | 17 | 17 | 17 | 17 |
Intensity change of reference fuel C (%) (23 ℃×72h) | ASTM d471 | -20 | -20 | -20 | -20 |
Elongation change of reference fuel C (%) (23 ℃×72h) | ASTM d471 | -20 | -20 | -20 | -20 |
Strength change rate of heat aging resistance (%) (72h at 225 ℃) | ASTM D573 | -20 | -20 | -20 | -20 |
Elongation change rate of heat aging resistance (%) (72h at 225 ℃) | ASTM D573 | -20 | -20 | -20 | -20 |
Note:
1.The curing agent is 2,5 dimethyl-2,5 Di tert butyl hexane peroxide (DBPH), and the dosage is 0.53gDBPH/100g precompound.
2. Press cure: 170 ℃* 10min, post cure: 200 ℃*4H
Jiangsu FreChem Co., Ltd

FreChem is a professional research & development, manufacturer of high performance rubber compounds, special additives and fluorochemicals.
Starting from 2007, FreChem has now become one of the leading manufacturers of rubber compounds in China.
Thanks to our research & development capabilities,
FreChem is able to provide highly qualified rubber compounds to global customers: Fluoroelastomer(include FKM raw gum, FKM full compound and FKM pre compound), Fluorosilicones(FVMQ),HNBR compounds, and other O-ring, sealing uncured rubber compounds.
Fluoropolymer: PTFE,PVDF,FEP,PFA,ETFE,PVDC and Fluoroelastomer
Fluorine fine chemical: D3F,PPVE,TFP,PMVE
FreChem expects to offer best solution as well as customization in order to meet customers’ special needs. The equipment and special know- how used in production control guarantee that our compounds respond to the customer requirement and provide high consistency standards.
Our vision is to become an excellent partners with customers and we will improve and focalize our skill on final application to develop compounds with high added value.

Package:
Packed with sealed PE bag outside, load in waterproof paper barrel. The net weight is 20+0.1kg per barrel, then stack on a pallet.
Stored in clean, cool and dry places, avoid contamination from foreign substance such as dust and moisture.

Shipping:
Nontoxic, noninflammable, inexplosive, no corrosion, the product is transported according to non-dangerous product.
Normally, one week for samples and Within 3 weeks after payment for others.
Production orders can be arranged specially to meet customer’s urgent demands.
To Yolanda Zhen
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