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
: Neoprene 1 : Reinforced Amucor
: Silicone : Conductive fabric
: PVC 3 : Silver filled rubber
: EPDM 4 : Nickel filled rubber
5 : Conductive rubber 5 : Graphite filled rubber
Conductive rubber O-rings for EMI shielding applications in grooves Conductive rubber O-rings for EMI shielding applications in grooves Holland Shielding Systems B.V. Holland Shielding Systems B.V.
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Product description:

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Series
Dimension A (mm)
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
Custom dimension A (mm)
Specify diameter in mm
Base material
Select an option:
1 : Neoprene
2 : Silicone
3 : PVC
4 : EPDM
5 : Conductive rubber
Covering
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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