6500 All shapes Clip-on EMI/RFI-shielding gasket

Clip-on EMI/RFI-shielding gaskets with or without water seal

This newly developed clip-on EMI/RFI-shielding gasket programme is extremely easy to mount and provides a solid mechanical attachment of the EMI/RFI-shielding gasket.

This EMI/RFI-shielding gasket can be assembled without a need for tools, simply by pressing the section manually onto the metal flange of your enclosure - without the use of any adhesives. The clamp mounting results in superb shielding performance, no degradation of shielding effect over time and tremendous cost savings on production lines.


The clip-on range comes in three flavours:

  • Type W series
    (Clip-on shielding gasket with water seal)
  • Type F series
    (Fully wrapped EMI/RFI-shielding gasket)
  • Type H series
    (For heavy-duty applications, for example military)
Clip on gasket
Clip-on gasket

Temperature resistance

An EPDM core with an operating temperature up to 100 °C and good resistance to UV, water, and acids make the clip-on shielding gaskets the right choice for outdoor applications.


Applications

Special shapes and materials excel in dynamic or high cycling applications such as Faraday-cage doors or access panels with low compression rates and very limited compression set.


Shielding performance

dB reduction
dB reduction

The layer of our well-established conductive textile provides over 96dB of broadband noise attenuation, which is crucial for mid- to high-range shielding applications. For tough environmental applications we recommend half-wrapped parts (Type W), although fully-wrapped profiles are also available for specific applications (Type F). When high shielding demands are made in the low-frequency area we recommend the use of Type H. Shielding effectiveness depends on the surface, the gasket shape and the materials used.


Type W (Clip-on shielding gasket with water seal)

Clip on EMI/RFI shielding gasket with water seal
Clip-on EMI/RFI-shielding gasket with water seal

The type W clip-on gasket series has been specially designed to provide environmental (water) sealing as well as EMI shielding for outdoor electronics and telecom cabinet manufacturers. The conductive textile is wrapped around one half of the gasket, dividing it into two parts: one part for electrical conductance and EMI shielding (made of highly conductive textile), and the other part for water sealing. The half-wrapped conductive textile provides over 96dB of broadband noise attenuation which is crucial for mid- to high-range shielding applications.


Type F (Fully wrapped EMI-shielding gasket)

Fully wrapped EMI/RFI shielding gasket
Fully wrapped EMI/RFI-shielding gasket

The type-F clip-on gasket series has been specially designed to provide both EMI shielding and electrical conductivity. The conductive textile is wrapped around the entire gasket, resulting in higher shielding performance than type W (half wrapped version) - only at the expense of water resistance.


Type H (For heavy-duty applications)

EMI/RFI shielding gasket for heavy duty applications
Fully wrapped EMI/RFI-shielding gasket

The type H clip-on gasket series has been specially designed for heavy-duty applications; in addition to EMI shielding it also provides low-frequency magnetic shielding. The type H series is covered with highly conductive metal cladding that is outdoor proof and suited for harsh environments, making this gasket type suitable for military, medical and all other applications were high demands are made on the EMI shielding in the magnetic low-frequency area.


Conductive textile
Fully wrapped EMI/RFI-shielding gasket

* The red line indicates the possible types of conductive layers.


Conductive flexible edge protector

Conductive flexible edge protector
Conductive flexible edge protector

The gasket is designed to slide easily over metal flanges to help reduce installation costs and is a good choice for retrofit applications.

Applications

  • Connecting plates
  • ESD (static discharge)
  • EMI shielding

Advantages

  • Easy gasket installation
  • Resistance to heat, humidity, salt fog, corrosion, and rain

Part number 6501
Partnumber 6501 | Clip-on EMI/RFI shielding gasket
Part number 6501 | Clip-on EMI/RFI-shielding gasket
Part number 6501
Available types F, H
Clamping range 1 mm
Core material PVC

Part number 6502
Partnumber 6502 | Clip-on EMI/RFI shielding gasket
Part number 6502 | Clip-on EMI/RFI-shielding gasket
Part number 6502
Available types F, H
Clamping range 1-2 mm
Core material PVC

Part number 6503
Partnumber 6503 | Clip-on EMI/RFI shielding gasket
Part number 6503 | Clip-on EMI/RFI-shielding gasket
Part number 6503
Available types F, H
Clamping range 1-3 mm
Core material PVC

Part number 6504
Partnumber 6504 | Clip-on EMI/RFI shielding gasket
Part number 6504 | Clip-on EMI/RFI-shielding gasket
Part number 6504
Available types F, H
Clamping range 6-8 mm
Core material PVC

Part number 6505
Partnumber 6505 | Clip-on EMI/RFI shielding gasket
Part number 6505 | Clip-on EMI/RFI-shielding gasket
Part number 6505
Available types F, H
Clamping range 1-4 mm
Core material PVC

Part number 6506
Partnumber 6506 | Clip-on EMI/RFI shielding gasket
Part number 6506 | Clip-on EMI/RFI-shielding gasket
Part number 6506
Available types F, H
Clamping range 1-3 mm
Core material PVC

Part number 6507
Partnumber 6507 | Clip-on EMI/RFI shielding gasket
Part number 6507 | Clip-on EMI/RFI-shielding gasket
Part number 6507
Available types F, H
Clamping range 1-4 mm
Core material PVC

Part number 6508
Partnumber 6508 | Clip-on EMI/RFI shielding gasket
Part number 6508 | Clip-on EMI/RFI-shielding gasket
Part number 6508
Available types F, H
Clamping range 1-3 mm
Core material PVC

Part number 6509
Partnumber 6509 | Clip-on EMI/RFI shielding gasket
Part number 6509 | Clip-on EMI/RFI-shielding gasket
Part number 6509
Available types F, H
Clamping range 4-6 mm
Core material PVC

Part number 6510
Partnumber 6510 | Clip-on EMI/RFI shielding gasket
Part number 6510 | Clip-on EMI/RFI shielding gasket
Part number 6510
Available types F, H
Clamping range 9-12 mm
Core material PVC

Part number 6511
Partnumber 6511 | Clip-on EMI/RFI shielding gasket
Part number 6511 | Clip-on EMI/RFI-shielding gasket
Part number 6511
Available types F, H
Clamping range 1-4 mm
Core material PVC

Part number 6512
Partnumber 6512 | Clip-on EMI/RFI shielding gasket
Part number 6512 | Clip-on EMI/RFI-shielding gasket
Part number 6512
Available types F, H
Clamping range 18-20 mm
Core material PVC

Part number 6513
Partnumber 6513 | Clip-on EMI/RFI shielding gasket
Part number 6513 | Clip-on EMI/RFI-shielding gasket
Part number 6513
Available types F, H
Clamping range 1-2 mm
Core material PVC

Part number 6514
Partnumber 6514 | Clip-on EMI/RFI shielding gasket
Part number 6514 | Clip-on EMI/RFI-shielding gasket
Part number 6514
Available types F, H
Clamping range 1-3 mm
Core material PVC

Sealing section

For heavy duty applications
For heavy-duty applications

* The red line indicates the possible types of conductive layers.

This combination of materials decreases the number of gaskets needed per cabinet. This makes the sealing section a economic solution for applications where an environmental seal as well as EMI shielding is needed.

Features

  • High-performance solution
  • Very cost effective

Part number 6521
Partnumber 6521 | Clip-on EMI/RFI shielding gasket
Part number 6521 | Clip-on EMI/RFI-shielding gasket
Part number 6521
Available types F, H
Clamping range 1-4 mm
Core material PVC

Part number 6522
Partnumber 6522 | Clip-on EMI/RFI shielding gasket
Part number 6522 | Clip-on EMI/RFI-shielding gasket
Part number 6522
Available types W, F, H
Clamping range 1-4 mm
Core material PVC

Part number 6523
Partnumber 6523 | Clip-on EMI/RFI shielding gasket
Part number 6523 | Clip-on EMI/RFI shielding gasket
Part number 6523
Available types W, F, H
Clamping range 1-4 mm
Core material PVC

Part number 6524
Partnumber 6524 | Clip-on EMI/RFI shielding gasket
Part number 6524 | Clip-on EMI/RFI-shielding gasket
Part number 6524
Available types W, F, H
Clamping range 1-2 mm
Core material PVC

Part number 6525
Partnumber 6525 | Clip-on EMI/RFI shielding gasket
Part number 6525 | Clip-on EMI/RFI-shielding gasket
Part number 6525
Available types W, F, H
Clamping range 1-4 mm
Core material PVC

Part number 6526
Partnumber 6526 | Clip-on EMI/RFI shielding gasket
Part number 6526 | Clip-on EMI/RFI shielding gasket
Part number 6526
Available types W, F, H
Clamping range 1-4 mm
Core material PVC

Part number 6527
Partnumber 6527 | Clip-on EMI/RFI shielding gasket
Part number 6527 | Clip-on EMI/RFI-shielding gasket
Part number 6527
Available types W, F, H
Clamping range 1-4 mm
Core material PVC

Part number 6528
Partnumber 6528 | Clip-on EMI/RFI shielding gasket
Part number 6528 | Clip-on EMI/RFI-shielding gasket
Part number 6528
Available types W, F, H
Clamping range 1-2 mm
Core material PVC

Part number 6529
Partnumber 6529 | Clip-on EMI/RFI shielding gasket
Part number 6529 | Clip-on EMI/RFI-shielding gasket
Part number 6529
Available types W, F, H
Clamping range 1-4 mm
Core material PVC

Part number 6530
Partnumber 6530 | Clip-on EMI/RFI shielding gasket
Part number 6530 | Clip-on EMI/RFI-shielding gasket
Part number 6530
Available types W, F, H
Clamping range 1-4 mm
Core material PVC

Part number 6531
Partnumber 6531 | Clip-on EMI/RFI shielding gasket
Part number 6531 | Clip-on EMI/RFI shielding gasket
Part number 6531
Available types W, F, H
Clamping range 2-4 mm
Core material PVC

Part number 6532
Partnumber 6532 | Clip-on EMI/RFI shielding gasket
Part number 6532 | Clip-on EMI/RFI shielding gasket
Part number 6532
Available types W, F, H
Clamping range 2-4 mm
Core material PVC

Part number 6533
Partnumber 6533 | Clip-on EMI/RFI shielding gasket
Part number 6533 | Clip-on EMI/RFI-shielding gasket
Part number 6533
Available types F, H
Clamping range 2-4 mm
Core material PVC

Part number 6534
Partnumber 6534 | Clip-on EMI/RFI shielding gasket
Part number 6534 | Clip-on EMI/RFI-shielding gasket
Part number 6534
Available types F, H
Clamping range 2-4 mm
Core material PVC

Part number 6535
Partnumber 6535 | Clip-on EMI/RFI shielding gasket
Part number 6535 | Clip-on EMI/RFI-shielding gasket
Part number 6535
Available types W, F, H
Clamping range 1-4 mm
Core material PVC

Part number 6536
Partnumber 6536 | Clip-on EMI/RFI shielding gasket
Part number 6536 | Clip-on EMI/RFI-shielding gasket
Part number 6536
Available types W, F, H
Clamping range 1-2 mm
Core material PVC

Part number 6537
Partnumber 6537 | Clip-on EMI/RFI shielding gasket
Part number 6537 | Clip-on EMI/RFI-shielding gasket
Part number 6537
Available types W, F, H
Clamping range 1-3 mm
Core material PVC

Part number 6538
Partnumber 6538 | Clip-on EMI/RFI shielding gasket
Part number 6538 | Clip-on EMI/RFI shielding gasket
Part number 6538
Available types W, F, H
Clamping range 1-4 mm
Core material PVC

Part number 6539
Partnumber 6539 | Clip-on EMI/RFI shielding gasket
Part number 6539 | Clip-on EMI/RFI-shielding gasket
Part number 6539
Available types W, F, H
Clamping range 2-4 mm
Core material PVC

Conductive edge protector

Conductive edge protector
Conductive edge protector

This is a very rigid profile, used to protect sharp edges from damage while still preserving the electrical conductance. This type is also suitable for electrical connection between two steel plates or for static discharge.

* The red line indicates the possible types of conductive layers.


Part number 6540
Partnumber 6540 | Clip-on EMI/RFI shielding gasket
Part number 6540 | Clip-on EMI/RFI-shielding gasket
Part number 6540
Available types F, H
Clamping range 0.5-2 mm
Core material EPDM, 70 ± 5 shore A

Part number 6541
Partnumber 6541 | Clip-on EMI/RFI shielding gasket
Part number 6541 | Clip-on EMI/RFI-shielding gasket
Part number 6541
Available types F, H
Clamping range 2-5 mm
Core material EPDM, 70 ± 5 shore A

Part number 6542
Partnumber 6542 | Clip-on EMI/RFI shielding gasket
Part number 6542 | Clip-on EMI/RFI-shielding gasket
Part number 6542
Available types F, H
Clamping range 1.2-1.8 mm
Core material EPDM, 70 ± 5 shore A

Part number 6543
Partnumber 6543 | Clip-on EMI/RFI shielding gasket
Part number 6543 | Clip-on EMI/RFI-shielding gasket
Part number 6543
Available types F, H
Clamping range 1.2-1.8 mm
Core material EPDM, 70 ± 5 shore A

Part number 6544
Partnumber 6544 | Clip-on EMI/RFI shielding gasket
Part number 6544 | Clip-on EMI/RFI-shielding gasket
Part number 6544
Available types F, H
Clamping range 1 mm
Core material EPDM, 70 ± 5 shore A

Dynamic section

Dynamic section
Dynamic section

Simple clip-on installation for doorjambs and similar needs, edge mounts, low and high deflection.

For applications where a small dynamic range is required and a clip-on mounting is preferred. Is mounted simply bij pressing it into position.

The gasket comes with retaining lances to lock into the desired position.

* The red line indicates the possible types of conductive layers.


Part number 6551
Partnumber 6551 | Clip-on EMI/RFI shielding gasket
Part number 6551 | Clip-on EMI/RFI shielding gasket
Part number 6551
Available types W, F, H
Clamping range 0.8-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6552
Partnumber 6552 | Clip-on EMI/RFI shielding gasket
Part number 6552 | Clip-on EMI/RFI-shielding gasket
Part number 6552
Available types F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6553
Partnumber 6553 | Clip-on EMI/RFI shielding gasket
Part number 6553 | Clip-on EMI/RFI-shielding gasket
Part number 6553
Available types F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6554
Partnumber 6554 | Clip-on EMI/RFI shielding gasket
Part number 6554 | Clip-on EMI/RFI-shielding gasket
Part number 6554
Available types F, H
Clamping range 1-2 mm
Core material EPDM, 60 ± 5 shore

Part number 6555
Partnumber 6555 | Clip-on EMI/RFI shielding gasket
Part number 6555 | Clip-on EMI/RFI-shielding gasket
Part number 6555
Available types F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6556
Partnumber 6556 | Clip-on EMI/RFI shielding gasket
Part number 6556 | Clip-on EMI/RFI-shielding gasket
Part number 6556
Available types F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6557
Partnumber 6557 | Clip-on EMI/RFI shielding gasket
Part number 6557 | Clip-on EMI/RFI-shielding gasket
Part number 6557
Available types F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6558
Partnumber 6558 | Clip-on EMI/RFI shielding gasket
Part number 6558 | Clip-on EMI/RFI-shielding gasket
Part number 6558
Available types F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6559
Partnumber 6559 | Clip-on EMI/RFI shielding gasket
Part number 6559 | Clip-on EMI/RFI-shielding gasket
Part number 6559
Available types F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6560
Partnumber 6560 | Clip-on EMI/RFI shielding gasket
Part number 6560 | Clip-on EMI/RFI-shielding gasket
Part number 6560
Available types F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6561
Partnumber 6561 | Clip-on EMI/RFI shielding gasket
Part number 6561 | Clip-on EMI/RFI-shielding gasket
Part number 6561
Available types W, F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6562
Partnumber 6562 | Clip-on EMI/RFI shielding gasket
Part number 6562 | Clip-on EMI/RFI-shielding gasket
Part number 6562
Available types W, F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6563
Partnumber 6563 | Clip-on EMI/RFI shielding gasket
Part number 6563 | Clip-on EMI/RFI-shielding gasket
Part number 6563
Available types F, H
Clamping range 1-4 mm
Core material EPDM, 60 ± 5 shore

Part number 6564
Partnumber 6564 | Clip-on EMI/RFI shielding gasket
Part number 6564 | Clip-on EMI/RFI-shielding gasket
Part number 6564
Available types F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6565
Partnumber 6565 | Clip-on EMI/RFI shielding gasket
Part number 6565 | Clip-on EMI/RFI shielding gasket
Part number 6565
Available types W, F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6566
Partnumber 6566 | Clip-on EMI/RFI shielding gasket
Part number 6566 | Clip-on EMI/RFI-shielding gasket
Part number 6566
Available types F, H
Clamping range 0.5-2 mm
Core material EPDM, 60 ± 5 shore

Part number 6567
Partnumber 6567 | Clip-on EMI/RFI shielding gasket
Part number 6567 | Clip-on EMI/RFI-shielding gasket
Part number 6567
Available types F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6568
Partnumber 6568 | Clip-on EMI/RFI shielding gasket
Part number 6568 | Clip-on EMI/RFI-shielding gasket
Part number 6568
Available types W, F, H
Clamping range 3-5 mm
Core material EPDM, 60 ± 5 shore

Part number 6569
Partnumber 6569 | Clip-on EMI/RFI shielding gasket
Part number 6569 | Clip-on EMI/RFI-shielding gasket
Part number 6569
Available types W, F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6570
Partnumber 6570 | Clip-on EMI/RFI shielding gasket
Part number 6570 | Clip-on EMI/RFI-shielding gasket
Part number 6570
Available types W, F, H
Clamping range 1-2 mm
Core material EPDM, 60 ± 5 shore

Part number 6571
Partnumber 6571 | Clip-on EMI/RFI shielding gasket
Part number 6571 | Clip-on EMI/RFI-shielding gasket
Part number 6571
Available types F, H
Clamping range 2.5-3.5 mm
Core material EPDM, 60 ± 5 shore

Part number 6572
Partnumber 6572 | Clip-on EMI/RFI shielding gasket
Part number 6572 | Clip-on EMI/RFI-shielding gasket
Part number 6572
Available types F, H
Clamping range 1.5-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6573
Partnumber 6573 | Clip-on EMI/RFI shielding gasket
Part number 6573 | Clip-on EMI/RFI-shielding gasket
Part number 6573
Available types F, H
Clamping range 2-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6574
Partnumber 6574 | Clip-on EMI/RFI shielding gasket
Part number 6574 | Clip-on EMI/RFI-shielding gasket
Part number 6574
Available types W, F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6575
Partnumber 6575 | Clip-on EMI/RFI shielding gasket
Part number 6575 | Clip-on EMI/RFI-shielding gasket
Part number 6575
Available types F, H
Clamping range 2-4 mm
Core material EPDM, 60 ± 5 shore

Part number 6576
Partnumber 6576 | Clip-on EMI/RFI shielding gasket
Part number 6576 | Clip-on EMI/RFI-shielding gasket
Part number 6576
Available types F, H
Clamping range 2-4 mm
Core material EPDM, 60 ± 5 shore

Part number 6577
Partnumber 6577 | Clip-on EMI/RFI shielding gasket
Part number 6577 | Clip-on EMI/RFI-shielding gasket
Part number 6577
Available types F, H
Clamping range 2-4 mm
Core material EPDM, 60 ± 5 shore

Part number 6578
Partnumber 6578 | Clip-on EMI/RFI shielding gasket
Part number 6578 | Clip-on EMI/RFI-shielding gasket
Part number 6578
Available types F, H
Clamping range 2-4 mm
Core material EPDM, 60 ± 5 shore

Part number 6579
Partnumber 6579 | Clip-on EMI/RFI shielding gasket
Part number 6579 | Clip-on EMI/RFI shielding gasket
Part number 6579
Available types W, F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6581
Partnumber 6581 | Clip-on EMI/RFI shielding gasket
Part number 6581 | Clip-on EMI/RFI-shielding gasket
Part number 6581
Available types W, F, H
Clamping range 1-2,5 mm
Core material EPDM, 60 ± 5 shore

Part number 6582
Partnumber 6582 | Clip-on EMI/RFI shielding gasket
Part number 6582 | Clip-on EMI/RFI-shielding gasket
Part number 6582
Available types F, H
Clamping range 1-2 mm
Core material EPDM, 60 ± 5 shore

Part number 6583
Partnumber 6583 | Clip-on EMI/RFI shielding gasket
Part number 6583 | Clip-on EMI/RFI-shielding gasket
Part number 6583
Available types F, H
Clamping range 1.5-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6584
Partnumber 6584 | Clip-on EMI/RFI shielding gasket
Part number 6584 | Clip-on EMI/RFI-shielding gasket
Part number 6584
Available types W, F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6586
Partnumber 6586 | Clip-on EMI/RFI shielding gasket
Part number 6586 | Clip-on EMI/RFI-shielding gasket
Part number 6586
Available types W, F, H
Clamping range 1-3,5 mm
Core material EPDM, 60 ± 5 shore

Part number 6587
Partnumber 6587 | Clip-on EMI/RFI shielding gasket
Part number 6587 | Clip-on EMI/RFI-shielding gasket
Part number 6587
Available types F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6588
Partnumber 6588 | Clip-on EMI/RFI shielding gasket
Part number 6588 | Clip-on EMI/RFI-shielding gasket
Part number 6588
Available types F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6589
Partnumber 6589 | Clip-on EMI/RFI shielding gasket
Part number 6589 | Clip-on EMI/RFI-shielding gasket
Part number 6589
Available types F, H
Clamping range 0.5-1.5 mm
Core material EPDM, 60 ± 5 shore

Part number 6590
Partnumber 6590 | Clip-on EMI/RFI shielding gasket
Part number 6590 | Clip-on EMI/RFI-shielding gasket
Part number 6590
Available types W, F, H
Clamping range 1-3 mm
Core material EPDM, 60 ± 5 shore

Part number 6591
Partnumber 6591 | Clip-on EMI/RFI shielding gasket
Part number 6591 | Clip-on EMI/RFI-shielding gasket
Part number 6591
Available types F, H
Clamping range 0.5-2 mm
Core material EPDM, 60 ± 5 shore

 

Holland Shielding Systems B.V. Holland Shielding Systems B.V.
Rated 4.4/5 based on 8 customer reviews
In stock
Product description:

To get a quotation for Clip-on gasket all shapes within 24 hours fill in the form below.

Part number
Please specify the partnumber from the tables
Type
Select an option:
W : Clip-on shielding gasket with waterseal
F : Fully wrapped clip-on EMI shielding gasket
H : For heavy duty applications
* Note: The red blocks are required

7100

High temperature resistant EMI gasket

6800

Amucor shield

3980

Electrically conductive glue (Shieldokit)

2100

Clip-on Kontaktfedern

LC

Large clip (For 1500 serie)

2400

Twisted Kontaktfedern