THERBAN®
PRODUCT PORTFOLIO
Therban® our high performance elastomer HNBR. Excel­
lent properties e. g. for engine components. Reliable resis­
tance to aggressive fluids, oil and grease – able to function
up to 165 °C. 
www.arlanxeo.com

THE HIGH-PERFORMANCE HNBRTHERBAN® FROM ARLANXEOTHERBAN®
THE SUCCESSFUL HNBR BRAND

Therban® – the answer to your needs

Therban® offers

Therban® – superior in many disciplines

Modern automotive engineering demands elastomers thatcan withstand high temperatures and aggressive sub­stances and can meet the particular requirements of fuel-­saving engine and car body designs. The demands in the oil
exploration industry are just as stringent. Here, elastomers
must weather aggressive environments and high mechani­
cal stresses.

High resistance to oil and grease
Ability to function at temperatures from - 40 °C to 165 °C
Superior performance in aggressive fluids such as power
steering fluids, automatic transmission fluids, engine oils,
diesel and brake fluids
A unique range of thermally stable grades with both par­tial and full saturation, ranging from 17 % ACN to 44 %ACN
Excellent abrasion resistanceExcellent ozone resistance for fully saturated grades. For
partially saturated grades only if proper compounded.

A direct comparison shows that Therban® is superior to many other elastomers and materials in several respects. Thismeans that you can turn to Therban® HNBR in applications where you previously needed more expensive or more complex
solutions.

Standards were set in these fields over 30 years ago with
the invention of Therban®, the world’s first hydrogenatedacrylonitrile-butadiene rubber. Since then, our researchscientists have been constantly working on improvements.
The result is a range of Therban® grades which will help
you to find solutions for the most demanding applications.
Our committed team of experts will give you the necessary
detailed advice.

Achievable Therban® vulcanizate properties

Better performance gives the competitive edge. For­Therban®, high performance is standard. And that means
wherever and however it is used. The outstanding prop­
erty profile ensures excellent vulcanizate properties. Our­specialists from technical marketing will help you to find the
Therban® grade that will best meet your needs.
Comparison of Therban® with other elastomers

Hardness (Shore A)

30 – 95

Tensile strength

15 – 38

Elongation at break

The material which assures market successGear oil resistanceEngine oil resistance

100 – 600

Modulus at 100 % elongation (MPa)3 – 20Modulus at 300 % elongation (MPa)

5 – 30“Resilience” (%)
RT

30 – 5570 °C

55 – 65

FKM
Therban® is superior to FKM (fluoroelastomer) in:mechanical properties at operation temperaturechemical resistance to alkaline oil additives
low-temperature properties
adhesion
AEM
Therban® is superior to AEM (ethylene-acrylic elastomer) in:
oil and fuel resistanceprocessing properties
physical properties at high operating temperature
odor
ACM
Therban® is superior to ACM (acrylate elastomers) in:processing behavior
Diesel resistancelow-temperature properties
physical properties
adhesionLow
temperature
behavior

Heat
aging
resistanceClassification of elastomers with respect to heat and oil resistance

Therban®

RT (mm3 loss)

30 – 80

150 °C (mm3 loss)

50 – 80

VMQ

AEM

ACM

FKM

ACM

170

EVM

-19 to -40
-70

AEM

Therban

160

®

EPDM

150
IIR

140
130

CSM

ECO/CO

120

NBR

110

Low-temperature properties2

Mechanical properties
at operating temperatures

25

Abrasion (measured according to DIN 53516)

Brittle point (°C)

Dynamic performance

Service temperature (°C)

70 h / 200 °C

Glass transition temperature (°C)

FKM

220

15
20

EVM
Therban® is superior to EVM (ethylene-vinylacetate copoly­mers) / EAM (ethylene-acrylate copolymers) in:
physical properties
low-temperature behavior
oil swell

Therban® is an adaptable high-performance elastomer that can replace many other specialty materials because T­ herban®
combines exceptional performance with cost-­efficiency and versatility.

230

70 h /150 °C

CM/CSM
Therban® is superior to CM/CSM (chlorinated/chlorosul­
fonated polyethylene) in:heat resistancesensitivity to certain oil additives
corrosion resistancesour gas resistanceIn a class of its own

Compression set (examples)
70 h / RT

ECO/CO
Therban® is superior to ECO/CO (epichlorohydrin elasto­mers) in:heat resistancesensitivity to certain oil additives
corrosion resistancesour gas resistance

CR

100
0

10

20

30

40
50
60
70
Volume swell in ASTM oil No.3/70h immersion test (%)

80

No requirement

3

THERBAN®
TYPICAL APPLICATIONS
A winning formula in practice­
Therban® is already indispensable in automotive systems,
oil exploration, mechanical engineering and aerospace. Our
research team is focused on extending this advantage.

Why not contact us to find out more?
We would be delighted to help you discover new applica­
tions and develop new projects.

Seals

Belts, hoses, mountings­ herban® superior line of fully saturated grades with highTheat resistance is suited to seal applications in automo­
tive systems and heavy equipment. Our fully saturated LT
grade T­ herban® LT 2007 provides an excellent combinationof high and low-temperature performance, ozone and oil­resistance and is ideal for long-term performance in off-theroad v­ ehicle and automotive seals which come into contact
with oil and grease.

­ herban® LT grades are especially suitable for applications
T
where cold flex cracking is a problem, as in snowmobile
belts. ­Therban® partially hydrogenated grades are the rightchoice in these dynamic applications.

Use Therban® for:wheel bearing seals
shock absorber seals
camshaft seals
power steering assembly seals
O-rings
water pump seals
gearbox shaft seals
air conditioning system seals
fuel system seals for diesel and RME coolant seals

Use Therban® for:air conditioning hoses
timing belts
engine mountings
oil-cooler hoses
torsional vibration dampeners
boots and bellows
chain tensioning devices
fuel hoses
overflow caps
power steering hoses
ship couplings
high-pressure hydraulic hoses
applications with a high dynamic load

Oil well specialties

Wire and cable

High ACN saturated grades are best for low swell and­explosive decompression resistance. This also applies tofuel and refrigerant applications. No other supplier offers aline of fully saturated HNBR grades that equals Therban® forperformance.

Medium-high ACN fully saturated grades are ideal for wireand cable applications.

Use Therban® for:blow-out preventers
packers
drill-pipe protectors
pump stators
drill bit seals

Roll coverings

Examples­ herban® AT grades are especially suited to high hardness
Troll applications; they combine high modulus and good­dynamic properties with low compound viscosity and highabrasion resistance. All partially saturated ­Therban® gradesfrom ARLANXEO are ideal for these dynamic applications.

Extremely high demands –extremely customized solutions­Therban® for covering the rollers of power drive units in the
cargo-loading system of one of the world’s largest transportplanes: top performance in all key criteria including d­ ynamicstrength, dimensional and thermal stability, abrasion
resistance, resistance to technical fluids and ­­chemicals.
The basis for the success is the precisely adjustability ofthis high-performance elastomer from ARLANXEO to meet
specific requirements.

Use Therban® for:metal-working rolls
paper industry rolls
printing rolls
elastomer components for looms
textile rolls
rolls for transport of containers in aircraft

Double load:high vertical+ high traction forces
up to 1,000 kg
up to over
3,000 Newtons** tensile stress of 300 kg

Use Therban® for:protective components for electrical systems
protective jackets for electrical cables and wires
blends with EVM/Al(OH)3 for FRNC cable jackets withexcellent flame-retardant properties and excellent low­
temperature properties

Camshaft absorbers with Therban® HNBR: longer lifetimes
for timing belts and perfect engine management.

4

Big in performance, small in size: outer diameter 74 mm,
length 91 mm.

Diesel, oil, brake fluid or other aggressive substances –Therban® hoses for exceptional performance and cost-efficiency.

5

THERBAN® AT
ACCELERATE PROCESSING

Better flow, faster mold filling and shorter cycle times
with Therban® AT
In comparison to regular HNBR grades, the low Mooneyviscosity of Therban® AT leads to better mixing at lower
temperatures and therefore to overall cost reduction.

Standard HNBR at 145 bar

220 bar

Improved sealing force retention with Therban® AT
Due to the low Mooney viscosity of Therban® AT, the use ofplasticizers can be reduced or – particularly for crucial com­pounds – even completely omitted. Thus significantly im­
proved sealing force retention upon aging can be achieved.
Discover the advantages of Therban AT as the raw­material of choice, either applied alone or in a blend
with another standard or specialty Therban® grade!
®

260 bar injection pressure at 90 °C

Faster production, smoother surfaces and sharperedges with Therban® AT
The charts on the right show the significant benefits of­Therban® AT for injection molding and extrusion. Besides
time and energy savings in processing, Therban® AT im­
proves the quality of the finished article. Improved flow re­sults in smoother surfaces and sharper edges.
Adjustments of recipe and crosslinking
agent to ­enhance vulcanizate properties for
Therban® AT applications
The comparison of various compound properties shows­only minor differences, which can be handled simply andsafely. A possible slightly lower crosslink density can becompensated by a minor adjustment of the crosslinking
agent.

Injection molding
20

1200

15

1000
800

10

600
5

400

0
-5

Pressure (bar)Through a unique process, a series of linear low-Mooney
Therban® grades has been developed that avoids pro­blems
typically encountered during the mixing and compound­processing process.

Rheovulcameter testing shows the beneficial effect of thesignificantly improved flow for injection molding. The use of
Therban® AT may reduce mold filling cycle times by up to
50 %. Alternatively, lower injection pressure or lower tem­
perature can be applied. Extrusion rates can be increased
by up to 40 %. Benefits can also be observed for compres­sion molding and transfer molding.

Piston (mm)Therban® AT for improved processability
With the Therban® AT grades, research scientists at­ARLANXEO have achieved a breakthrough in process tech­
nology resulting in outstanding benefits for both processing
and product properties.

200
0

1

2

3

4

0

Time (s)Therban® AT 3404

Standard HNBR

Extrusion rate
Therban® AT 3404
40 phr /50 phr N330

Standard HNBR
40 phr N330

Modulus (100%) (MPa)5.6 / 7.5

6.5

Ultimate tensile strength (MPa)26.6 / 27.8

27.4

Ultimate elongation (%)

273 / 256

237

Shore A hardness (pts)64/ / 69

66

Compound Mooney57 / 69

101

Therban® AT

Standard HNBR
0

5

10

15

20

25

30

g/min at 95 °C

Compound properties

Therban® AT at 145 bar

220 bar

260 bar injection pressure at 90 °C

Compression set (%)

25

7.5 phrVulcup 40 KE

20

7.5 phrVulcup 40 KE

9 phr
Vulcup 40 KE

15
10
5
0
70 h /150 °C
Therban AT 3404®

6Standard HNBR

7

THERBAN® LT GRADESTO COVER ALL LOW TEMPERATURE REQUIREMENTS
The answer to your needs when low temperature flexibility
is key for the product performance

Oil and media resistance50

A broad range of Therban® grades for usage attemperatures below -30 °C
Balanced properties between oil resistance and low­temperature flexibility
Full or partial saturation at 5.5 %Mooney viscosity ML(1+4)100 °C from 39 to 80 MU
Optimal material available for every requirement

40
30
20
10
0
-45

The Therban® LT portfolio has been expanded from 25 %ACN over 20 % ACN to 17% ACN to meet all requirements.
The optimal product for volume swell and low temperature
properties can be chosen from this broad range.

-40

-35

-30

40
Mass increase after 7 d, at 150 °C [%]For several low temperature applications the flexibility andexcellent compression set at temperatures below -30 °C are
more important than volume swell in oil. The Therban® LT
grade range has been developed for these applications.

Tg versus swell, influence of ACN content

Volume swell IRM903, 7 d, 150°C [%]The acrylonitrile (ACN) content is a crucial factor determin­
ing the properties of Therban® compounds. High levels of
ACN result amongst others in excellent oil and media resist­ance. However, at the same time low temperature flexibility
is reduced due to the increase of the glass transition tem­
perature caused by the higher ACN content.

Tg measured by DSC (20 K/min) [°C]

35
30
25
20
15
10
5
0

  

LT 1707 VP

LT 1757 VP

LT 2057

LT 2568 VP

LT 2007

LT 1707 VP

LT 1757 VP

coolant

LT 2007

LT 2057

LT 2568 VP

IRM 903

Higher swell of Therban® LT 1707 VP and LT 1757 VP in IRM 903
reflects lower ACN content

Low temperature properties – improvement TR-10
LT 1707 VP

LT 1757 VP-5Temperature [°C]

-10
-20
-25
-30
-35

LT 2057

LT 2568 VP

30

LT 1707 VP LT 1757 VP

LT 2007

LT 2057

LT 2568 VP

20
10
0
-10
-20
-30
-40
21 d, 150 °C, hot air

-40
TR 10

8

LT 2007

Change in elongation after aging [%]0

Aging in different Media

TR 70

7 d, 150 °C, coolant

7 d, 150 °C, IRM 903

9

THERBAN®
PRODUCT RANGE
Fully and partially saturated grades
Residual
doublebondcontent (%)

Density(g/cm3)Standard
packaging

Remarks

ACN Mooney
Residual
Densitycont. viscosity(1)double(g/cm3)(%)
ML (1+4)bond
100 °C
content (%)

34

63

max. 0.9

0.95

Therban® 3407

34

70

max. 0.9

0.95

Therban® 3607

36

66

max. 0.9

0.96

Therban® 3907

39

70

max. 0.9

0.96

Therban® 4307

43

63

max. 0.9

0.96

Therban® 4309

43

100

max. 0.9

0.96

similar to Therban® 3407, but with improved flow behavior(2)Bulk-Box with 20 bales of 25 kg
each wrapped in polyethylene film
or 25 kg bales individuallyplease do not cut

Therban® 3406

lower swelling compared to Therban® 3407
further improved oil swelling resistance compared to Therban® 3607,
excellent for fuel-resistant hoses, belts, seals, O-rings and gaskets
very high temperature resistance combined with minimal swelling inoils and fuels; ideal for severe a­ pplication conditions in hoses, dia­phragms, O-rings and seals for automotive and oil field applications
similar to Therban® 4307 for special compounds with high filler
and plasticizer loads

Therban® 3446

34

61

4.0

0.95

optimal combination of heat resistance, dynamic properties
and processing

Therban® 3467

34

68

5.5

0.95

recommended standard grade for sulfur cure;excellent dynamic properties

Therban® 3496

34

55

18.0

0.96

Therban® 3627

36

66

2.0

0.96

Bulk-Box with 20 bales of 25 kg
each wrapped in polyethylene film or 25 kg
bales individually packed in boxes

Therban® LT 1707 VP*

1774

max. 0.9

0.96

Therban® LT 1757 VP*

17

70

5.5

0.96

Therban® LT 2157

21

70

5.5

0.96

Therban® LT 2007

2174

max 0.9

0.96

Therban® LT 2057

21

67

5.5

0.96

Therban® LT 2568 VP*

25

80

5.0

0.97

similar to Therban® LT 2157 low mold fouling gradewith improved oil resistancesimilar to Therban® 3406 with extra low Mooney viscosity foroutstanding processing properties for use in O-rings, seals,
spread compounds or as viscosity modifier for high viscosity
compounds (peroxide curable)

for lifetime belts, O-rings, ­gaskets and seals requiring­maximum heat ­resistance and dynamic performance

Partially saturated grades (suitable for peroxide and sulfur crosslinking)

optimal compromise between low-temperature compression
set and oil swell resistance; especially suited for rolls and dynamic
oil field components
special low RDB type, comparable to Therban® 3607
(peroxide cure recommended) to increase crosslink density
for high modulus and/or low compression set applications
special low RDB type, similar to Therban® 3627 for higher filler
load capacity (peroxide cure recommended)

Therban® AT 3404

34

39

max. 0.9

0.95

Therban® AT 3443 VP*

34

39

4.0

0.95

Therban® AT 3904 VP*

39

39

0.9

0.96

Therban® AT 4364 VP*

43

39

5.5

0.98

Therban® AT LT 2004 VP*(Low Temperature/
Low Mold Fouling)

21

39

max. 0.9

0.95

77

3.5

0.97

5.5(2)

1.14

36

87

2.0

0.96

Therban® 3668 VP*

36

80

6.0

0.95

Therban® 4367

43

61

5.5

0.98

Therban® 4369

43

97

5.5

0.98

similar to Therban® 4307 with capacity for higher filler loads

Carboxylated Technology – XT

Therban 4498 VP*

44

78

9.0

0.98

High ACN and high RDB grade, primarily designed for dynamic
application requiring excellent resistance to heat and nonpolar hydrocarbon fluids

Therban XT VP*

high RDB, high Mooney grade similar to Therban® 3627 for higher
filler and plasticizer load capacity
excellent resistance to oils; should be used instead of Therban®
4307 in case improved dynamic and bonding properties are required

Low ACN grade for optimal flexibility and excellent com­pression set at very low temperature, designed for ex­treme service conditions (peroxide curable)
designed for excellent compression set at low temperatures(sulfur and peroxide curable)
optimal low-temperature flexibility balanced with good oil resist­ance for use in low-temperature belts, seals, O-rings and gaskets
similar to Therban® LT 2157 with optimal combination of heatand low-temperature resistance, designed for extreme service
conditions (peroxide curable), outstanding low mold foulingsimilar to Therban® LT 2157 with outstanding low moldfouling properties (sulfur and peroxide curable)

Low Mooney – Advanced Technology – AT

Therban® 3629

(1) unmassed (DIN 53523; ASTM D 1646)(2) see Therban® AT for maximum flow
* Trial product (VP=Versuchsprodukt)

Remarks

Low Temperature Technology – LT

Fully saturated (suitable for peroxide crosslinking)®

Standard
packaging

Bulk-Box with 20 bales of 25 kg eachwrapped in polyethylene film or 25 kg
bales individually packed in boxes

Mooneyviscosity(1)ML (1+4)
100 °C

33

Bulk-Box with 20 bales of 25 kg
each wrapped in polyethylene film or 25 kg
bales individually packed in boxes

ACN
cont.
(%)

Specialty grades

similar to Therban® 3446 combined with processing a­ dvantagesof Advanced Technology (sulfur and peroxide curable)similar to Therban® 3907 combined with processing­advantages­of Advanced Technology (peroxide curable)similar to Therban® 4367 combined with processing a­ dvantagesof Advanced Technology (sulfur and peroxide curable)similar to Therban® LT 2007 combined with processing­advantages of new Advanced Technology (peroxide curable)maximum wear resistance and adhesive properties; in­combination with Therban® ART strong synergies observed;
use for belts, rolls, oil field applications and as adhesive­promoter for fabrics and cords (sulfur and peroxide curable)

Acrylate Reinforced Technology – ART
Therban ART 3462

34(2)

22(3)

20 kg
boxes
on pallets
contents:
800 kgenhanced stiffness, abrasion and load bearing properties,
excellent adhesion to metal; use where extreme dynamic
performance is warranted e. g. lifetime belts, paper andsteel rolls (peroxide curable)(1) unmassed (DIN 53523; ASTM D 1646)(2) of base polymer(3) compound Mooney* Trial product (VP=Versuchsprodukt)

1011

Therban® Connect
Your online contact for t­ echnical needs across the regions

http://connect.therban.com

ts / online
Your link to our technical and HSEQ teamYour personalized link with our Therban® technical people and
HSEQ services.
Have an easy overview of all requests answered and ­running foryour company on Regulatory Affairs and P­ roduct Safety.

tick / itYour link to the Therban® data base
Find Therban® product information like product and safety ­data
sheets, survey of grades and packaging information.
Have access to Therban® HSEQ relevant information on ­regulatory
affairs and product safety.

Trial product:(VP = Versuchsprodukt = trial product). The information contained herein is merely preli­minary. Testing as to properties and applications is not final. Further information, including
data which could change or add hazards with use, may be developed by the manufacturer,
the user or a third-party institute. Such information may be needed to properly evaluate or
use this product. Use is undertaken at the sole risk of the user.

Portfolio/Edition 2018
© 2018 ARLANXEO. All rights reserved.
EMEA
ARLANXEO Deutschland GmbHHigh Performance Elastomers
Dormagen, Germany
hnbr.emea@arlanxeo.com
APAC
ARLANXEO Performance Elastomers(Changzhou) Co. Ltd. Shanghai BranchHigh Performance Elastomers
Shanghai, P.R. China
hnbr.apac@arlanxeo.com
NAFTA
ARLANXEO USA LLC
High Performance Elastomers
Pittsburgh PA, USA
hnbr.nafta@arlanxeo.com
LATAM
ARLANXEO Brasil S.A.
High Performance Elastomers
Sao Paulo, Brazil
hnbr.latam@arlanxeo.com
www.therban.com
therban@arlanxeo.com

Quality & Environmental Management:
Therban® is produced under strict control regarding safety, environmental protection andquality. The whole supply chain, from production to customer service, is covered by ISO
9001 and ISO 14001 certification.
Product Safety:
Relevant safety data and references as well as the necessary hazard warning labels can befound in the Material Safety Data Sheet.
Health and Safety Information:
Appropriate literature has been assembled which provides information concerning the he­alth and safety precautions that must be observed when handling the A­ RLANXEO products
mentioned in this publication. For materials mentioned which are not ARLANXEO products,
appropriate industrial hygiene and other safety precautions ­recommended by their manu­
facturers should be followed. Before working with any of these products, you must readand become familiar with the available ­information on their hazards, proper use and hand­ling. This cannot be overemphasized. ­Information is available in several forms, e.g., mate­rial safety data sheets and ­product labels. Consult us through your ARLANXEO represen­tative or the Health, Safety, Environment and Quality Department (HSEQ) of ARLANXEO.
Regulatory Compliance Information:
Some of the end uses of the products described in this publication must comply with appli­
cable regulations, such as the FDA, BfR, NSF, USDA and CPSC. If you have any questions
on the regulatory status of these products, contact your ARLANXEO representative.
The manner in which you use and the purpose to which you put and utilize our products,
technical assistance and information (whether verbal, written or by way of production
evaluations), including any suggested formulations and recommendations, are beyond ourcontrol.
Therefore, it is imperative that you test our products, technical assistance and i­nformation
to determine to your own satisfaction whether they are suitable for your intended uses andapplications. This application-specific analysis must at least ­include testing to determine
suitability from a technical as well as health, safety, and environmental standpoint. Such
testing has not necessarily been done by us. Unless we otherwise agree in writing, allproducts are sold strictly pursuant to the terms of our standard conditions of sale, which
can be found at the ARLANXEO homepage. All information and technical assistance isgiven without warranty or guarantee and is subject to change without notice. It is expressly
understood and agreed that you assume and hereby expressly release us from all liability,
in tort, contract or otherwise, incurred in connection with the use of our products, technicalassistance and information.
Any statement or recommendation not contained herein is unauthorized and shall not bindus. Nothing herein shall be construed as a recommendation to use any product in conflictwith patents covering any material or its use. No license is implied or in fact granted under
the claims of any patent.