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Hersteller: TC SHIELDING

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The technique of moulding conductive elastomers has a wide range of benefits. This process allows T C Shielding to manufacture components that have a very accurate tolerance requirement. Below is a list of its major advantages:

  • Odd and 3D shaped components are easily made.
  • Accurate tolerances can be held.
  • Small products are easy to manufacture.
  • Product can be adhesive backed (dependent upon moulding type).
  • Silicones and fluorosilicones plus wide range of conductive fillers.
 

Comparative Properties - Moulded Materials

General Description
EcE Material Reference (Type) 1A 1B 1D 1F 1G 1I
             
Elastomer Type (Sil - Silicone, F/Sil - Fluorosilicone) Sil Sil Sil Sil Sil Sil
Filler Material Ag/Ni Ag/Cu Ag/Al Carbon Ag Ag/Glass
Colour Tan Tan Tan Black Tan Tan
Electrical Properties Tol Test Method            
Volume Resistivity (ohm.cm) Max   0,005 0,005 0,008 9,000 0,002 0,005
Shielding Effectiveness (dB)
200 KHz (H-Field)		   MIL-G-83528
MIL 285		 70 70 70 30 70 55
100 MHz (E-Field)   105 115 110 65 115 95
500 MHz (E-Field)   105 115 105 60 115 95
2 GHz (Plane Wave)   100 115 100 40 115 95
10 GHz (Plane Wave)   100 115 100 30 115 95
Physical Properties
Specific Gravity (g/cm∆) ±5% ASTM D-792 3,71 3,32 2,19 1,19 3,20 "2.00
75
1.25"
Hardness (Shore A) ± 5 ASTM D-2240 70 75 70 70 75
Tensile Strength (MPa) Min ASTM D-412 1,25 1,25 1,25 5,00 1,25
Elongation (%) Min ASTM D-412 100 100 100 150 100 100
Compression Set (%) Max ASTM D-395 30 30 30 20 30 30
Upper Operating Temperature (°C) -   160 125 160 160 160 160
Lower Operating Temperature (°C) - ASTM D-1329 -50 -50 -50 -50 -50 -50

General Description
EcE Material Reference (Type) 1J 1J/8 2A 2B 2D 2J
    Non Flam        
Elastomer Type (Sil - Silicone, F/Sil - Fluorosilicone) Sil Sil F/Sil F/Sil F/Sil F/Sil
Filler Material Ni/Gr Ni/Gr Ag/Ni Ag/Cu Ag/Al Ni/Gr
Colour szary szary Tan Tan Green Green
Electrical Properties Tol Test Method  
Volume Resistivity (ohm.cm) Max   0,05 "0.050- 0,005 0,005 0,01 0,05
0.100"
Shielding Effectiveness (dB)   MIL-G-83528            
200 KHz (H-Field) MIL 285 70 70 75 75 70 70
100 MHz (E-Field)     95 95 110 110 110 100
500 MHz (E-Field)     90 90 110 120 105 100
2 GHz (Plane Wave)     90 90 105 120 100 100
10 GHz (Plane Wave)     90 90 100 120 100 100
Physical Properties
Specific Gravity (g/cm∆) ±5% ASTM D-792 2,45 2,3 4,6 5 2,7 3,25
Hardness (Shore A) ± 5 ASTM D-2240 80 75 80 75 70 80
Tensile Strength (MPa) Min ASTM D-412 2 1,4 1,25 1,25 0,55 0,75
Elongation (%) Min ASTM D-412 150 125 100 100 100 100
Compression Set (%) Max ASTM D-395 30 30 30 30 30 30
Upper Operating Temperature (°C) -   160 160 160 125 160 160
Lower Operating Temperature (°C) - ASTM D-1329 -50 -50 -50 -55 -55 -55

Standard connector products

Rear Mounting Jam Nut Receptacle ‘O’ Rings

Standardowe przewodzące uszczelki odlewane

Shell size MIL C 38999 MIL C 26482 MIL C 81511 d1 Tol d1 ± d2
TC REF TC REF mm mm mm
6 1 - 14.00 0.13 1.78
8 2 - 17.16 0.13 1.78
8 - 3 18.77 0.13 1.78
9 4 - 20.35 0.15 1.78
10 - 5 21.95 0.15 1.78
11+12 6 - 25.12 0.15 1.78
13+14 7 7 28.30 0.15 1.78
15+16 8 8 31.47 0.15 1.78
17+18 9 9 34.65 0.15 1.78
19+20 10 - 37.77 0.15 2.62
21+22 11 - 40.95 0.25 2.62
23+24 12 - 44.12 0.25 2.62

Order example

MA - XX - XXX
Example: MA

MA - Moulded Ring
3A - Silver Aluminium/Silicone
001 - Shell size

Cost Effective Alternative To Conductive Moulded O-Rings

T.C.Shielding have developed a range of extruded/jointed O-Rings that offer a cost effective alternative to traditionally moulded items with added benefits, and compatible tolerancing. The following are benefits of this new process.

  • Low tooling cost
  • Reduced production scrap rate
  • Advantage of hollow forms which help to reduce compression force
  • Zero flash on profile
  • Compatible tolerancing
  • Shorter lead times
  • Minimum ID of 18.00mm

Below is a comparison between moulded and jointed tolerances

Moulded O-ring
ID = 25.12+/-0.15
Section = 1.78+/-0.08
Developed Lenght= 84.04/84.98

Ext./Jointed O-ring
ID = 25.12+/-0.16
Cross section= 1.78+/-0.10
Developed Length= 84.00/85.00

 
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The technique of moulding conductive elastomers has a wide range of benefits. This process allows T C Shielding to manufacture components that have a very accurate tolerance requirement. Below is a list of its major advantages:

  • Odd and 3D shaped components are easily made.
  • Accurate tolerances can be held.
  • Small products are easy to manufacture.
  • Product can be adhesive backed (dependent upon moulding type).
  • Silicones and fluorosilicones plus wide range of conductive fillers.
 

Comparative Properties - Moulded Materials

General Description
EcE Material Reference (Type) 1A 1B 1D 1F 1G 1I
             
Elastomer Type (Sil - Silicone, F/Sil - Fluorosilicone) Sil Sil Sil Sil Sil Sil
Filler Material Ag/Ni Ag/Cu Ag/Al Carbon Ag Ag/Glass
Colour Tan Tan Tan Black Tan Tan
Electrical Properties Tol Test Method            
Volume Resistivity (ohm.cm) Max   0,005 0,005 0,008 9,000 0,002 0,005
Shielding Effectiveness (dB)
200 KHz (H-Field)		   MIL-G-83528
MIL 285		 70 70 70 30 70 55
100 MHz (E-Field)   105 115 110 65 115 95
500 MHz (E-Field)   105 115 105 60 115 95
2 GHz (Plane Wave)   100 115 100 40 115 95
10 GHz (Plane Wave)   100 115 100 30 115 95
Physical Properties
Specific Gravity (g/cm∆) ±5% ASTM D-792 3,71 3,32 2,19 1,19 3,20 "2.00
75
1.25"
Hardness (Shore A) ± 5 ASTM D-2240 70 75 70 70 75
Tensile Strength (MPa) Min ASTM D-412 1,25 1,25 1,25 5,00 1,25
Elongation (%) Min ASTM D-412 100 100 100 150 100 100
Compression Set (%) Max ASTM D-395 30 30 30 20 30 30
Upper Operating Temperature (°C) -   160 125 160 160 160 160
Lower Operating Temperature (°C) - ASTM D-1329 -50 -50 -50 -50 -50 -50

General Description
EcE Material Reference (Type) 1J 1J/8 2A 2B 2D 2J
    Non Flam        
Elastomer Type (Sil - Silicone, F/Sil - Fluorosilicone) Sil Sil F/Sil F/Sil F/Sil F/Sil
Filler Material Ni/Gr Ni/Gr Ag/Ni Ag/Cu Ag/Al Ni/Gr
Colour szary szary Tan Tan Green Green
Electrical Properties Tol Test Method  
Volume Resistivity (ohm.cm) Max   0,05 "0.050- 0,005 0,005 0,01 0,05
0.100"
Shielding Effectiveness (dB)   MIL-G-83528            
200 KHz (H-Field) MIL 285 70 70 75 75 70 70
100 MHz (E-Field)     95 95 110 110 110 100
500 MHz (E-Field)     90 90 110 120 105 100
2 GHz (Plane Wave)     90 90 105 120 100 100
10 GHz (Plane Wave)     90 90 100 120 100 100
Physical Properties
Specific Gravity (g/cm∆) ±5% ASTM D-792 2,45 2,3 4,6 5 2,7 3,25
Hardness (Shore A) ± 5 ASTM D-2240 80 75 80 75 70 80
Tensile Strength (MPa) Min ASTM D-412 2 1,4 1,25 1,25 0,55 0,75
Elongation (%) Min ASTM D-412 150 125 100 100 100 100
Compression Set (%) Max ASTM D-395 30 30 30 30 30 30
Upper Operating Temperature (°C) -   160 160 160 125 160 160
Lower Operating Temperature (°C) - ASTM D-1329 -50 -50 -50 -55 -55 -55

Standard connector products

Rear Mounting Jam Nut Receptacle ‘O’ Rings

Standardowe przewodzące uszczelki odlewane

Shell size MIL C 38999 MIL C 26482 MIL C 81511 d1 Tol d1 ± d2
TC REF TC REF mm mm mm
6 1 - 14.00 0.13 1.78
8 2 - 17.16 0.13 1.78
8 - 3 18.77 0.13 1.78
9 4 - 20.35 0.15 1.78
10 - 5 21.95 0.15 1.78
11+12 6 - 25.12 0.15 1.78
13+14 7 7 28.30 0.15 1.78
15+16 8 8 31.47 0.15 1.78
17+18 9 9 34.65 0.15 1.78
19+20 10 - 37.77 0.15 2.62
21+22 11 - 40.95 0.25 2.62
23+24 12 - 44.12 0.25 2.62

Order example

MA - XX - XXX
Example: MA

MA - Moulded Ring
3A - Silver Aluminium/Silicone
001 - Shell size

Cost Effective Alternative To Conductive Moulded O-Rings

T.C.Shielding have developed a range of extruded/jointed O-Rings that offer a cost effective alternative to traditionally moulded items with added benefits, and compatible tolerancing. The following are benefits of this new process.

  • Low tooling cost
  • Reduced production scrap rate
  • Advantage of hollow forms which help to reduce compression force
  • Zero flash on profile
  • Compatible tolerancing
  • Shorter lead times
  • Minimum ID of 18.00mm

Below is a comparison between moulded and jointed tolerances

Moulded O-ring
ID = 25.12+/-0.15
Section = 1.78+/-0.08
Developed Lenght= 84.04/84.98

Ext./Jointed O-ring
ID = 25.12+/-0.16
Cross section= 1.78+/-0.10
Developed Length= 84.00/85.00

 
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