7910 series Conductive jointed O-rings

For applications in grooves

The 7910 series Jointed O-ring are practically the same as the 7900 series O-Profiles, however, this is a turnkey closed O-ring. They are used where environmental and EMI screening is required but were little space is available.

Four kinds of cores are available:

  • solid,
  • hollow extrusion,
  • cell rubber and
  • small rectangular shapes.

These cores can be covered with metallized fabric foils or made out of conductive rubber. For optimal shielding performance a compression of 5-10% is recommended for solid elastomers and 10-50% for hollow extrusions and cell rubbers.


Standard dimensions

7900 Jointed O-ring technical drawing
7910 Jointed O-ring technical drawing
Part numberA
>mm
B
>mm
7910-14.0 14.00 1.8
7910-17.2 17.2 1.8
7910-18.8 18.8 1.8
7910-20.4 20.4 1.8
7910-21.9 21.9 1.8
7910-25.1 25.1 1.8
7910-28.3 28.3 1.8
7910-31.5 31.5 1.8
7910-34.7 34.7 1.8
7910-37.8 37.8 2.6
7910-41.0 41.0 2.6
7910-44.1 44.1 2.6
Example picture of our 7910 series Conductive jointed O-rings
>

Shielding performance

Shielding effectiveness depends on surface, shape of gaskets and materials used.

Shielding performance (dB)
FrequencyGraphite
>filled
Nickel
>filled
Silvered
>particles
>filled
Conductive fabricAmucor
>foil
200 KHz 70 75 70 65 70
100 MHz 95 110 115 103 110
500 MHz 90 110 115 92 98
2 GHz 90 105 115 89 91
10 GHz 90 100 115 87 89
These values are measured under laboratory conditions.
> In your situation results may differ, please read our Guarantee.

Technical specifications solid elastomers

FillerGraphiteNickelSilvered particles
Upper operating temp. C° +160 +160 +160
Lower operating temp. C° -50 -50 -50
Specific gravity (±5%) 1.99 4.60 3.20
Hardness shore A (±5%) 60 80 75
Elongation % (min) 100 100 100
Compression set % 30 30 30
Tensile strength Mpa (min) 1.00 1.25 1.25
Volume resistivity ohms/cm (Max) 0.1 0.005 0.002
These values are measured under laboratory conditions.
> In your situation results may differ, please read our Guarantee.

Material options

Base materialCovering
1: Neoprene 1 : Reinforced Amucor
2: Silicone 2: Conductive fabric
3: PVC 3 : Silver filled rubber
4: EPDM 4 : Nickel filled rubber
5 : Conductive rubber 5 : Graphite filled rubber

 

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Series
Select an option:
14.0 : 14.0 mm
17.2 : 17.2 mm
18.8 : 18.8 mm
20.4 : 20.4 mm
21.9 : 21.9 mm
25.1 : 25.1 mm
28.3 : 28.3 mm
31.5 : 31.5 mm
34.7 : 34.7 mm
37.8 : 37.8 mm
41.0 : 41.0 mm
44.1 : 44.1 mm
Other : Specify custom dimension
Specify diameter in mm
Specify diameter in mm
Select an option:
1 : Neoprene
2 : Silicone
3 : PVC
4 : EPDM
5 : Conductive rubber
Select an option:
1 : Reinforced amucor
2 : Conductive fabric
3 : Silver particles filled rubber
4 : Nickel filled rubber
5 : Graphite filled rubber
* Note: The red blocks are required
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