EXCELLENT EMC SHIELDINGAND ENVIRONMENTALSEALING SOLUTIONS
Kemtron Ltd., now part of TE Connectivity, is a leading company in electromagnetic compatibility (EMC) shielding andenvironmental sealing since 1980 and works with blue chip customers in more than 35 countries around the world. We havedeveloped a global reputation for quality, performance and reliability, with an enviable track record in demanding industries such as
defense, aerospace, information technology, communications and electronics. We help customers meet their EMC shielding andenvironmental sealing requirements with innovative solutions that enhance product performance, reduce through-life costs andensure regulatory conformance.

Our fully-equipped manufacturing and warehouse facility at Braintree in Essex United Kingdom has the flexibility to produce
short-run bespoke solutions as well as standard products in volume. With in-house design, development, engineering andmanufacturing capability, we maintain control over the entire production process to ensure the highest levels of quality
and reliability.
Accredited toISO EN 9100:2018, ISO 9001:2015,ISO 14001:2015 and ISO 45001:2018.
ISO9001

AS/EN9100 SeriesISO14001

ISO45001

Quality
ManagementAviation, Spaceand DefenseEnvironmental
Management

Occupational
Health and Safety
Management

FM01488

FM692283

EMS542900

OHS542901

EMC Solutions

Environmental Sealing Solutions

Kemtron Ltd. has the knowledge, skills and resources todevelop individual EMC solutions that match your exact
requirements. This might take the form of custom-designed
products or advice to your product development team on thedesign of enclosures and fixings to improve shielding
performance.

With over 30 years’ experience in the environmental sealing
industry, Kemtron Ltd. has the knowledge, skills andresources to develop individual tailored solutions for new orexisting products that match your exact requirements.

If you are designing new products, we recommend bringing
in our technical team at an early stage in the development
process. We can provide advice on design requirements thatwill ensure optimum shielding when used with the right
EMC product. We can also develop solutions for retrofitted
EMC products to overcome operational problems, improveshielding performance, or meet changing regulatory
requirements.
By working closely with many of the world’s leading material
producers, we can meet the demands of customers who wantto meet ever-increasing performance criteria or ensure
reliable operation in extreme climatic, environmental oroperational conditions.

We can also provide advice on design requirements that willensure optimum protection when used with the rightgasket or seal. We look at a wide range of factors including
compression forces, chemical resistance and flame resistancethat will impact sealing performance through the life of yourproduct and work with you to design a solution that balances
performance, reliability and cost.
We are able to offer materials that have wide temperature
ratings, long operational life, Ingress Protection sealing,resistance to fluids and Nuclear, Biological, Chemical (NBC),
UL94 listings for fire retardancy and low toxicity products.

PERFORMANCE MATERIALS / EXCELLENT EMC SHIELDING AND ENVIRONMENTAL SEALING SOLUTIONS

2EMC Components & Gaskets

Conductive Elastomers

Knitted Wire Mesh

Oriented Wires in Silicone

Electrically conductive elastomers are
made from silicone or fluorosilicone
loaded with highly conductive particles
such as silver plated aluminium,
silver plated copper, nickel coatedgraphite and pure nickel. Available as
extruded profiles, “O” rings, mouldedcomponents, and flat sheet for die cut
gaskets. Conductive elastomers offer
an excellent temperature range andare resistance to compression set andfluorosilicone has superior resistanceto fuel oils and solvents.

Knitted wire mesh gaskets provide an
excellent cost effective EMI gasket,
providing shielding in the magnetic aswell as electric fields. Kemtron knit infour wire types, Monel, stainless steel,aluminium and tin plated copper cladsteel. Knitted mesh gaskets can besupplied as solid mesh or knitted overelastomeric cores with or without
environmental seal in continuous lengths
or fabricated to custom designs.

Solid and sponge silicone populatedwith vertically oriented monel oraluminium wires up to 140/sq cm.
Provides excellent shielding withelectromagnetic protection (EMP)
survivability and will also provide anenvironmental seal. Available as sheet
stock, strip or die cut to customer
design and can be easily fabricated forlarge picture frame gaskets. Also
available with self adhesive backing andcompression stops or collars which can
be fitted to prevent over compression.

Beryllium Copper
Finger Stock

Form in Place Gaskets

Connector GasketsConductive or non-conductive elastomer
silicone compounds are deposited as agasket directly to the enclosure for
Computer Numerical Control (CNC)
technology. These gaskets can be very
intricate small sections suitable for
enclosures with no space for a
traditional gasket such as thin walled
multi compartment housings providing
an EMI and environmental seal.

Kemtron Ltd. has tooling for a wide
range of standard MIL-Spec connector
gaskets. Different materials are available
to meet the demands of EMI shielding,environmental sealing, galvanic
compatibility and fuel/oil resistance.

Beryllium copper EMI gaskets havesuperior mechanical springcharacteristics and high electricalconductivity making them ideally suited
to shielding applications where frequent
access is required such as shielded room
doors. These are available in profiles tosuit most EMI shielding applications
including grounding. Many plating
finishes are available to address galvanic
compatibility concerns and enhanceshielding performance.

PERFORMANCE MATERIALS / EXCELLENT EMC SHIELDING AND ENVIRONMENTAL SEALING SOLUTIONS

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Cable Shielding Jackets
Zip on type tubing with internal EMI
shielding liner for shielding of bundledcables. Easy to open and close so cables
can be added or removed. Tubing isavailable in many diameters and issuitable for static or flexible
applications. Flame retardant and low
smoke/low toxicity versions arealso available.

EMI Shielding
Cable Glands

Conductive Adhesives

Kemtron Ltd.’s cable entry glandprovides an excellent EMI shield forscreened cables which pass throughenclosure walls. Made from brass, they
are available to suit cables from 1.5mm
diameter up to 16mm. They also provide
traditional strain relief for the cable.

Single component RTV (roomtemperature vulcanising) silicone
electrically conductive adhesives areavailable with a range of fillers fromsilver to nickel coated graphite. These
are designed to be used as a thin bond
between two components, caulking
compound can also be supplied
for larger gap filling. Two component
epoxy systems are also available.

Woven & Expanded
Wire in Elastomers

EMI Shielding
Ventilation Panels

Conductive FabricOver Foam Gaskets

Woven aluminium wire or expanded
monel or aluminium sheet impregnatedwith silicone, fluorosilicone or synthetic
rubber. Providing an excellent EMI
and environmental seal, the metal
reinforcement eliminates cold flow due
to over compression. Available as sheet
or die cut gaskets, particularly suitablefor MIL connector gaskets.

Kemtron Ltd.’s EMI shielding vent panels
or attenuvents are made from aluminium
or steel honeycomb mounted into aframe. Many aluminium frame styles areavailable together with different
thicknesses and configurations ofhoneycomb to meet different shielding
requirements. Protective grills areavailable for vulnerable areas together
with dust filtration foams. Many plated
or painted finishes can be specified.

Highly conductive nickel/copper orsilver plated polyester or nylon fabricover an open celled urethane core.
Many profiles are available including
rectangular, D shape and low
compression/deflection C shape seals.
These provide an excellent EMI gasket
with low compression set and excellent
abrasion resistance for high cycling
and wiping applications. Most meet
UL94V-0 and are available as strips, cut
to length or die cut.

PERFORMANCE MATERIALS / EXCELLENT EMC SHIELDING AND ENVIRONMENTAL SEALING SOLUTIONS

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Conductive
Adhesive Tapes
Available in a range of electricallyconductive foils with conductive
adhesive which are suitable forpermanent shielding solutions
or temporary fixes for EMC testing
purposes. These can be supplied as acontinuous roll in various widths or as
die cuts shapes for specific applications.

EMI Shielded Windows
Windows for display devices orinspection panels providing optimumtransparency and EMI shielding. These
are made from fine stainless steel orcopper wire mesh which are laminatedor embedded within a range of opticalsubstrates. They are made to orderfrom small sizes up to architectural
window size. Clear Indium Tin Oxide(ITO) coatings are also available.

EMI Shielding Laminates

Microwave Absorber

Metal foils laminated to various
non-conductive backings, which can be
die cut to shape or scored and formed
into a three dimensional shield.
Laminates providing a cost effective
light weight EMI shield provide thateliminate the need for conductive
coatings on the inside of the enclosure.

Absorber materials are used for EMI
isolation and RF absorption. They areavailable in different materials to provide
absorption from as low as 5 MHz upto 40 GHz. Comprising materials suchas loaded urethane, silicone, nitrile andneoprene, there are many choices
available to provide products that canbe characterised to provide absorption
at single or multiple frequencies.

Ferrites for EMI
Suppression
Kemtron Ltd. stocks a wide rangeof ferrites for EMI suppression, including
clip on cable cores suitable forretrofitting, cable cores for roundand ribbon cables, and common
mode chokes.

Board Level
Shielding Cans
PCB shielding cans provide effective
isolation of board level components.
Photo etching is the most cost effective
production method and the custom
made cans can be manufactured toincorporate a range of design features
to suit individual applications. Our sales
department should be contacted todiscuss requirements.

PERFORMANCE MATERIALS / EXCELLENT EMC SHIELDING AND ENVIRONMENTAL SEALING SOLUTIONS

5Environmental Sealing

Materials

Flat Gaskets“O” Rings

Kemtron Ltd. stocks many types ofelastomeric materials for flexible
environmental sealing but specializes
in silicones, fluorosilicones, solid andsponge that meet UL94V-0 and low
smoke/ low toxicity. Other materials
include Poron™ polyurethane,
Neoprene/chloroprene, ethylene
propylene diene monomer (EPDM) etc.
Materials can be supplied as sheet,strip, laminated, self adhesive backed
or die cut to complex shapes.
Liquid RTV silicone can be applied
as a form in place gasket direct.

Flat gaskets can be cut by rule die, kisscut or more complex shapes by water jet
cutting. Compression stops or collars
can also be incorporated, leading to
reduced hardware costs and negating
the need for fixings to be torqued toprevent over compression and damage
to the gasket. Self adhesive backing
can be applied to the materials prior
to cutting.

Kemtron Ltd. specialises in themanufacture of bespoke “O” rings
specialising in silicones andfluorosilicones. Made from extruded
sections cut to length and the two ends
joined by vulcanisation to ensure a
durable bond and maintaining theintegrity of the seal. Sections andmaterials available are sponge, hollow
tube, solid, D shape, rectangular etc.
Rectangular picture frame gaskets withmitred corners can also be made inthis way.

Extrusions
Extruded profiles include cords,
tubes, D shape, hollow D, P shapeand bespoke profiles to special order.
Flat strips can be extruded or slit fromsheet. Materials include silicones,fluorosilicones, Poron urethane foams,EPDM, Neoprene etc. Extrusions can besupplied as continuous length or
fabricated into “O” rings or more
complex gaskets.

PERFORMANCE MATERIALS / EXCELLENT EMC SHIELDING AND ENVIRONMENTAL SEALING SOLUTIONS

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PERFORMANCE MATERIALS / EXCELLENT EMC SHIELDING AND ENVIRONMENTAL SEALING SOLUTIONS

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For free application advice, additional technical information and to request a full catalogueplease contact us directly.

Kemtron Extended Product Portfolio Contact Information
United Kingdom

Rest of Europe

Phone: +44 (0) 1376 348115

Phone: +44 (0) 1376348115

Email : info@kemtron.co.uk

Email: info@kemtron.co.uk

FranceAsia

Phone: + 33 (0) 160778316

Phone: +44 (0) 1376348115

Email : info@kemtron.fr

Email : info@kemtron.co.uk

Germany
Phone: +44 (0) 1376348115
Email: info@kemtron.dete.com
TE Connectivity, TE Connectivity (logo) and Kemtron Proven EMC Shielding Solutions (logo) are trademarks owned or licensed by the TE Connectivity Ltd. family of companies.
All other logos, products and/or company names referred to herein might be trademarks of their respective owners.
The information given herein, including drawings, illustrations and schematics which are intended for illustration purposes only, is believed to be reliable.
However, TE Connectivity makes no warranties as to its accuracy or completeness and disclaims any liability in connection with its use. TE Connectivity‘s obligations shall
only be as set forth in TE Connectivity‘s Standard Terms and Conditions of Sale for this product and in no case will TE Connectivity be liable for any incidental, indirect orconsequential damages arising out of the sale, resale, use or misuse of the product. Users of TE Connectivity products should make their own evaluation to determine thesuitability of each such product for the specific application.
©2022 TE Connectivity. All Rights Reserved.
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PERFORMANCE MATERIALS / EXCELLENT EMC SHIELDING AND ENVIRONMENTAL SEALING SOLUTIONS