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cable glands
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The main focus of our business is on the safety of our customers during their day-to-day work. For over
80 years now, weve been leading the way in the explosion protection sector in achieving this goal.
Development of explosion protected, electrical control devices and control units increased continuously
and successfully as of 1926. Pioneering new developments and innovative products are the results
of this success. R. STAHL specialists have been working actively for many years now in national and inter-
national committees to define new standards and better safety regulations. R. STAHL presented the
EXLUX 6000 explosion protected series of strip lighting units in 1989. The company quickly became a leading
supplier to the world market in the lighting sector. In 1993, three independent fieldbus systems from
the R. STAHL company were used on an offshore drilling platform near the coast of Norway. What was then
the companys largest fieldbus project required customer-specific, innovative solutions and a high quality
engineering share. R. STAHLs remote I/O System IS1 was introduced in the year 2000 making a decisive step
into the new millennium and gearing for the future. Today, it is an important element of the companys
new fieldbus solutions. Then as now, safety standards did not pose a barrier to us but represented a challenge.
We not only comply with all standards, but are generally also involved in helping to create these standards
and set new ones. As a result, R. STAHL numbers among the leading suppliers of explosion protected compo-
nents and systems for measurement, control, instrumentation, power distribution, operator control and
observation, besides lighting, worldwide. This in turn results in our offer of all-in services to the explosion
protection sector.
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your safety -- our reality
Spoilt for choice 5
Application guide 6
Ex e cable glands 8
Ex d cable glands 10
Triple certified 12
TRITON CDS 14
Accessories 16
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Before cable gland products can correctly be selected to
suit the users application, there are a number of variable
factors that need to be determined. Without this infor-
mation it is difficult to make an accurate selection or rec-
ommendation. Some of these factors may include location,installation code of practice, environmental conditions,
industrial or classified hazardous area, type of equipment
and details of the cable to be used.
Here are some general guidelines that may help to identify
the appropriate cable gland product to suit your situation.
General cable gland selection guidelines
> determine conditions of use, i.e. industrial,
hazardous area.> determine environmental conditions
> determine type of cable, armoured or non-armoured
> determine type of armour and thickness,
where applicable
> determine cable overall diameter
> determine cable inner bedding diameter,
where applicable
> determine enclosure type and configuration
> determine whether there is any potential for the coupling
of dissimilar metals (e.g. brass and aluminium)
> determine entry hole type and size
> determine any access limitations or space restrictions
> determine any special earthing or EMC requirements
> determine accessories required, where applicable
If the cable glands are intended for use in flammable
atmospheres (hazardous areas), the following additional
points may help your selection process:
> what is the protection method of the equipment,
e.g. Exd, Ex e, Ex n> which gas group is the equipment rated for service in
IIA, IIB or IIC
> if Ex d, is the cable directly entering the main enclosure
> if Ex d, is there a source of ignition inside the enclosure
> if Ex d, is the enclosure volume less than or greater
than 2000 cm3
> if Ex n, is the enclosure a restricted breathing (Ex nR)
enclosure
application guide
> if Ex nR, restricted breathing enclosure, does the cable
directly enter the main enclosure
> entry hole type, drilled and tapped (threaded) or
clearance hole
> entry hole thread form and size
Once the above information has been identified, the person
carrying out selection is more able to make an informed
decision about which product should be used from the
choices available.
Please note that selection and installation should be
carried out in line with good engineering practice, observing
the requirements of the prevailing code of practice
(e.g. IEC 60079-14), and in accordance with the instructions
provided.IEC 60079-14 requires that the selection and installations
of equipment shall be carried out only by competent
persons whose training has included instruction on the
various types of protection and installation practices,
relevant rules and regulations and on the general principles
of area classification. The competency of the person
shall be relevant to the type of work to be undertaken.
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hazardous area cable glands (CENELEC approved)
type protection cable type generic cable type specific sealing method I.P. rating
8161 Ex e unarmoured S.W.A. (single wire armour), braid armour outer seal IP66, IP68
8163/2T3CDS
Ex e, Ex d armoured (universal) S.W.A. (s ingle wire armour), braid armour(SWB, GSWB, CWB, TCWB or BWB)
inner and outer seal withdeluge seal
IP66, IP67,IP68
8163/2E1FU
Ex e, Ex d armoured (universal) S.W.A. (s ingle wire armour), braid armour(SWB, GSWB, CWB, TCWB or BWB)
inner and outer seal IP66
8163/2E1FW
Ex e, Ex d armoured S.W.A. (single wire armour) inner and outer seal IP66
8163/2E1FXZ
Ex e, Ex d armoured braid armour (SWB, GSWB, CWB, TCWB or BWB) inner and outer seal IP66
8163/2E2FU
Ex e, Ex d armoured lead sheated(universal)
L.C./S.W.A (lead sheathed and single wire armour),L.C./S.T.A (lead sheathed and steel tape armour)
inner and outer seal IP66
8163/2E2FW
Ex e, Ex d armoured lead sheated L.C./S.W.A (lead sheathed and single wire armour) inner and outer seal IP66
8163/2CUe
Ex e armoured (universal) S.W.A. (single wire armour), braid armour(SWB, GSWB, CWB, TCWB or BWB)
outer seal IP66
8163/2C2K
Ex e armoured (universal) S.W.A. (single wire armour), braid armour(SWB, GSWB, CWB, TCWB or BWB)
outer seal with deluge seal IP66, IP67,IP68
8163/2CWe
Ex e armoured S.W.A. (single wire armour) outer seal IP66
8163/2CXe
Ex e armoured braid armour (SWB, GSWB, CWB, TCWB or BWB) outer seal IP66
8163/2A2F
Ex e, Ex d unarmoured unarmoured outer seal IP66, IP67,IP68
8163/2SS2K
Ex e, Ex d unarmoured unarmoured double outer seal IP66, IP67,IP68
8163/2PX2K
Ex e, Ex d armoured (universal) S.W.A. (single wire armour ), braid armour(SWB, GSWB, CWB, TCWB or BWB)
outer seal/compoundbarrier with deluge seal
IP66, IP67,IP68
8163/2
PXSS2K
Ex e, Ex d unarmoured unarmoured outer seal/compound
barrier
IP66, IP67,
IP68
IEC cables Onshore Oil, Gas and Petrochemicals
specific cable type single seal double seal compound barrier
unarmoured A2F SS2K PXSS2KS.W.A. (single wire armour) CWe or C2K E1FW or E1FU PX2K
L.C./S.W.A (lead sheathed and single wire armour) E2FW or E2FU PX2KPB
A.W.A. (aluminium wire armour) CWe E1FW or E1FU PX2K
A.S.A. (aluminium strip armour) C2K E1FU or T3CDS PX2K
S.T.A. (steel tape armour) C2K E1FX/Z or E1FU PX2K
L.C./S.T.A (lead sheathed and steel tape armour) E2FX/Z or E2FU PX2KPB
L.C./GSWB (lead sheathed and braid armour) E2FX/Z or E2FU PX2KPB
wire braid armour (SWB, GSWB, CWB, TCWB or BWB) CXe or C2K E1FX/Z or E1FU PX2K
screened (braided) flexible e.g. CY/SY Controlflex CXe or C2K E1FX/Z or E1FU PX2K
IEC cables Offshore Oil and Gas
specific cable type single seal double seal compound barrier
unarmoured A2F SS2K PXSS2Kwire braid armour (SWB, GSWB, CWB, TCWB or BWB) C2K T3CDS PX2K
screened (braided) flexible e.g. CY/SY Controlflex C2K T3CDS PX2K
S.T.A. (steel tape armour) C2K T3CDS PX2K
Typical cable types with corresponding metal cable gland types
Selection table
Of course the cable type plays a significant part in the cable gland selection, but other important factors must also be carefully considered.
Please note that limitations or special conditions of safe use may be applicable to cable gland applications in accordance with IEC 60079.
For further assistance in the selection of cable glands please refer to pages 12 and 13.
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R. STAHL offers electrical installation material and cable connecting solutions with a variety of approvals
from internationally recognised certification bodies, including ATEX, IECEx and many others. R. STAHL,
the market leader in explosion protected material, offers a range of cable glands for use with armoured and
non-armoured cables, suitable for use in hazardous areas, classified under IEC 60079 -10, in both metallic
and non-metallic configurations. These cable glands have been designed and constructed in accordance with
BS6121 and EN50262, although the former established the more onerous requirement, and are certified
as fully compliant with the very latest EN and IEC standards EN/IEC 60079 series. With this approach, there
are no special seal materials required to suit typical low or high temperature situations, and two or more
alternative seals to suit each cable glands sealing range are not required. Consequently there are no special
order requirements necessary for the majority of project applications around the world. The certified cable
gland sizes on offer range from the regular M20 to the impressive M130. Using the same consistent design
concept this 8163/2 range stands proud amongst the rival offerings available on the market. Quite simply
R. STAHL gives you every possible combination of options that you could imagine.
spoilt for choice
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Series 8161
Increased safety Ex e non metallic indoor and outdoor cable glands with metric threads for use in Zone 1,
Zone 2, Zone 21 and Zone 22 hazardous areas with all types of unarmoured cables. Its superior
sealing technique ensures a highly effective and reliable high integrity solution. Suitable for use in
conjunction with increased safety Ex e apparatus or flameproof Ex de equipment which has an increased
safety Ex e terminal chamber. For Intrinsic Safety Ex i, a version with blue cap nut is available.
Series HSK
Increased safety Ex e bell mouthed cable glands are available in brass or plastic/aluminium with metric
threads for use in Zone 1, Zone 2, Zone 21 and Zone 22 hazardous areas with all types of unarmoured cables.
Because of their construction the cable glands are suitable for portable equipment.
Series 8163
Increased safety Ex e metallic cable gland for onshore and offshore applications with metric threads for use
in Zone 1, Zone 2, Zone 21 and Zone 22 hazardous areas with all types of armoured cables.
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ex e cable glands
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Series 8161> Intrinsic safety (Ex i) version available
> IP 66
> as single or multi-cable entry
> integrated plug (accessory) for closing unused
cable entries
Series HSK-MZ
bell mouthed cable glands in metal Ex e
> IP 68
> for portable equipment
Series HSK-K-MZ
bell mouthed cable glands in plastic/aluminium Ex e
> IP 68
> for portable equipment
1 3 Series 8163/2-C2Kcable glands Ex e
for all types of armoured cable
> suitable for use with offshore and onshore
cables, with outer seal
> incorporating internal deluge seal for arduous
conditions
> reversible armour clamping cone and uni-fit
clamping ring
Series 8163/2-CWe
cable glands Ex e
for SWA cable with outer seal
> suitable for use with onshore cables
Series 8163/2-CXe
cable glands Ex e
for wire braid armour cables with outer seal
> suitable for use with onshore cables
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0ex d cable glands
selection
Cables come in a wide variety of shapes and sizes, and new
designs are regularly being introduce. For example, ones
with optical fibres. The issue of correctly sealing these
cables as they enter hazardous area electrical equipment
is a worldwide problem, and not confined purely to local
conditions. Although there are no IEC construction standards
for the cables intended for use in f lammable atmospheres,
according to IEC 60079-14 if a cable gland with an
elastomeric flameproof seal is to be used, the cable should
> be substantially compact and circular (i.e. especially
the part of the cable entering the enclosure)
> have an extruded bedding (without any gaps)> have fillers, if any are used, which are non-hygroscopic.
Effectively, the cable must be assessed to verify its
suitablity to prevent gas penetration and migration along
its length, as well as its ability to prevent explosion
transmission through the cable, before any cable gland with
an elastomeric seal can be selected. Beyond this other
exceptions still exist.
The IEC installation code of practice IEC 60079-14 is very
clear about the selection of cable glands for use with
Ex d enclosure types.
Cable Gland Selection according to IEC 60079-14
Regarding the subject of cable glands to maintain integrity
of type of protection flameproof enclosures Ex d
using direct cable entry into the flameproof enclosures,
special selection criterions have to be considered
as defined in Section 10 of IEC Standard IEC 60079-14
Electrical apparatus for explosive gas atmospheres
Part 14: Electrical installations in hazardous areas (other
than mines).
In order to achieve compliance with the prevailing Code ofPractice, and in particular IEC 60079-14, it is necessary
to evaluate the function of the equipment, the cable gland,
and the cable. Furthermore, in order to satisfy the conditions
of the applicable standards compatibility of all three with
each other must also be verified. Section 10 of IEC 60079-14
Additional requirements for type of protection Ex d
Flameproof enclosures regarding the selection of cable
glands must be followed. Specific rules to ensure integrity
and safe operation of the installed equipment are also
set out here.
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If the cable gland is not certified as part of the equipment
but tested and certified as a separate component, and
the used cable is substantially compact and circular the
selection chart can be used
> if the cable is not round in appearance, or visually appears
to allow air to pass through its interstices because
the cable construction is not adequately filled, then a com-
pound barrier type cable gland could be selected.
> in the case of flameproof enclosures Ex d, the function
of the elastomeric sealing ring, which is applied to thesection of the cable entering the equipment is to provide
a gas tight seal around the cable bedding and prevent
explosion from penetrating the cable sealing point so that
the explosion cannot be transmitted to the external
atmosphere.
> if the cable is not round, it is not possible to rely upon an
elastomeric seal to perform a sealing function around the
cable sheath. An example of a cable that fits this scenario
is a twisted pair instrument cable where the insulated
conductors beneath the inner cable bedding do not
usually offer a round (circular) surface on which to seal.
If the inner bedding follows the same shape, then an
elastomeric seal may struggle to seal effectively around
the cable circumference. The effect is often more notice-
able with single pair cables, and it may be necessary to fit
a compound sealing barrier type cable gland to overcome
the situation, depending upon the form of protection
and cable entry configuration of the apparatus enclosure.
> equally, if the cable is not adequately filled, and allowsthe passage of air or gas along the cable length, then
there would be no protection to the inner part of the cable
when an elastomeric sealing ring is used. In this case
a compound barrier type cable gland is the only safe solu-
tion, and is necessary in order to maintain the integrity
of the equipment and prevent gas migration between
equipment or between hazardous areas and safe areas.
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The 8163/2 series hazardous area metallic cable glands are available for non-armoured, and all types
of armoured and braided cables. They fulfil all of the requirements of the European ATEX-directives and fully
comply with the latest IEC standards. 8163/2 series cable glands are available in single seal
and double seal orientations, and the double seal cable glands incorporate a displacement seal on the cable
inner bedding. Their modular design and wide cable acceptance range allows a broad variety of cables
to be terminated in a single cable gland without the need for alternative seals or clamping arrangements to
be ordered. In addition to normal sealing of the cable sheath, secure clamping of the single wire
armouring is essential as this armouring is used, not only for mechanical protection, but also contributes
to the electrical protection. In the event of an earth fault, the armouring acts as an earthing conductor,
and the earth continuity system is maintained via the cable gland. According to IEC 60079-0:2004, when
intended for use with braided type cables, the cable gland outer seal must also provide cable retention under
tensile load conditions without the braid being clamped. R. STAHLs 8163/2 series cable glands
are certified in accordance with this requirement. These cable glands are intended for use with Ex equipment
and are provided with triple certification Exd, Ex e and Ex nR, making them suitable for use with
flameproof (type d), increased safety (type e) and restricted breathing/non-sparking (type nR /nA) enclosures.
2triple certified
ex d, ex e, ex nR
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1modular design
Series 8163/2-A2F (offshore and onshore)Ex d, Exe and Ex nR for unarmoured cables
Series 8163/2-E1FXZ (onshore)
Ex d, Ex e and Ex nR for wire braid and
STA cables with inner and outer seal
Series 8163/2-E1FW (onshore)
Ex d, Ex e and ExnR for SWA cables with inner
and outer seal
Series 8163/2-E1FU (onshore)
Ex d, Ex e and ExnR for all types of armoured
cables with inner and outer seal
Series 8163/2-E2FW (onshore)
Ex d, Ex e and ExnR for lead sheathed SWA
cable with inner and outer seal
Series 8163/2-E2FU (onshore)
Ex d, Ex e and ExnR for all types of armoured and
lead sheathed cables with inner and outer seal
Series 8163/2-T3CDS (offshore and onshore)Ex d, Exe and Ex nR for all types of
armoured cables with inner and outer seal
> incorporating internal deluge seal for arduous
conditions
> reversible armour clamping cone and uni-fit
clamping ring ensuring right first time cable
termination
> unique compensating displacement seal (CDS)
system used on the cable inner bedding
Series 8163/2-PXSS2K (offshore and onshore)
Compound barrier glands Exd and Ex e for all
types of unarmoured cables
Series 8163/2-PX2K (offshore and onshore)
Compound barrier glands Exd and Ex e for all
types of armoured cables
inner seal housing body and outer seal housingreversible
armour cone
uni-fit
armour clamping ring
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Inner seal housing> robust explosion proof CDS system, less susceptible
to damage than equivalent diaphragm seals.
> no need for cable guide to protect CDS system
as cable conductors do not penetrate or
damage the explosion proof seal as they pass
through it.
> flameproof seal does not tear or split as a result
of frictional rotation during installation.
> flameproof inner seal remains in the cable gland,
and does not ride on the cable, and therefore is
not prone to mechanical damage when the cable
needs to be withdrawn from the equipment.
> remote take off, disconnection and re-connection
does not jeopardise the safety integrity of the
Ex apparatus.
> inspection can be affected without disturbing the
inner seal.
Deluge protection seal> deluge protection by means of tried and
tested Oring feature simple and effective
arrangement.
> internal deluge seal is not exposed to mechan-
ical damage or ultraviolet radiation after
installation and is completely protected in its
operational working life, offering total reliability.
> There is no need to pull or re-position the
deluge seal on installation or subsequent
re-assembly after inspection, as the R.STAHL
Oring arrangement engages automatically
during a simple installation procedure providing
effective protection every time.
When a larger diameter cable is installed,
the inner compensator is effected to a greater extent
When a smaller diameter cable is installed,
the inner compensator is effected to a lesser extent
S compensator
inner seal housing deluge seal deluge sealinner seal housing
CDS compensator
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accessories
A range of accessories and thread conversion adaptors and reducers are offered to compliment the 8163/2
series cable glands. These include locknuts, serrated washers, sealing washers, earth tags and shrouds.
Locknuts are recommended to secure cable glands, unions, adaptors, reducers, and stopper plugs to a gland
plate or into equipment. Serrated washers fitted internally to the equipment and before a locknut act as
an anti-vibration device to prevent the cable gland or other cable entry device and locknut arrangement from
inadvertently loosening in service. Entry thread sealing washers fitted at the equipment interface are fitted
to maintain the ingress protection level of the equipment. For explosion protected equipment it is essential to
maintain the integrity of the degree of ingress protection at which the equipment has been rated. Slip on
earth tags installed between the cable gland and equipment, provide an earth bond connection as specified in
BS6121:Part 5:1993 and also comply with category B rating as specified in BS EN 50262. A range of push on
shrouds, which are used to minimise the risk of dirt or foreign substances gathering on the cable gland body,
and/or point of cable to gland interface are also available. Standard shrouds are produced in black PVC.
Thread conversion adaptors and reducers are available that convert the cable gland to a different thread type,
or enlarge or reduce the threaded connection between the equipment entry hole and the cable entry device.
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conductor bushings ExdThe conductor bushings are Ex-components, which
provide the connection between electrical
equipment within an enclosure and external circuits.
They are flameproof and form when fitted
into a flameproof enclosure an ignition- and
explosion-secure seal.
accessories
> locknuts
> earth tags
> sealing washers
> serrated washers
> flat washers
> shrouds
> enlargements, reducers in moulded plastic
> adapters and reducers in metal
> earth conductor bushings Ex e
red plugsThe plugs are for closing unused cable entries of
series 8161.
stopping plugs
> in moulded plastic
> in metal
breathing glands
> in moulded plastic
> in metal
post type bushings Ex d
The feed-through connectors provide a flameproof
electrical connection between two flameproof
enclosures or one flameproof enclosure and
a connection space with a different explosion
protection type.
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S
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R.STAHL Schaltgerte GmbH
Am Bahnhof 30, 74638 Waldenburg, Germany
Telephone + 49 7942 943 -0
Fax + 49 7942 943-4333
www.stahl.de