CILBOND® ELASTOMER BONDING GUIDEHOW TO USE THIS GUIDEFirst row means first choices – the system will bond in most cases )Second row means second choices – the system should bond)Third row means the bonding system may bond)

Only full tests will optimise the bonding system.
There are cases where a third choice has been thecorrect choice for a particular end use.

Our recommendations may change depending on the end-application and environmental requirements.
ELASTOMERCILBOND
1 COATSYSTEM

CILBOND
2 COATSYSTEM

COMMENTS
Please read before selection

10E2465W

62W 3689ET

12E / 80ET

Butyl (IIR)
Chlorobutyl (CIIR)For ‘S’ cured use 24
For peroxide cures, use 12E / 80ET, 65W or 36
For general purpose bonding use 10E
12E/80ET bonds a wider range of compounds.

2489ET

2489ET

12E / 80ET

Chloroprene (CR)24 or 12E / 80ET recommended for superior
environmental resistance

Chlorosulphonated
Polyethylene (CSM)

2489ET

12E / 80ET

24 is normally first choice2489ET

12E / 80ET

24 is normally first choice

Chlorinated Polyethylene (CPE)2462W
89ET 36

12E / 80ETEpichlorhydrin (ECO)

24 and 62W give highest resistance to hotfuels and to methanol / toluene blends

EPDM and EPR- Sulphur cured

12E / 80ET
89ET

12E / 80ET is first choice. Especially for hot glycol,
brake fluid and heat resistance.

12E / 80ET

12E / 80ET is first choice. Especially for hot glycol,
brake fluid and heat resistance.

Acrylic (ACM)

12E / 65W
12E / 80ET

EPDM and EPR- Peroxide cured

89ET

Fluoroelastomer (FKM)- Bisphenol or Amine cured

33 A/B3665W
3665W

Fluoroelastomer (FKM)- Peroxide cured

12E (33 A/B)

12E / 65W

High S

33 A/B
2489ET
89ET
24

12E / 80ET

Low S
Styrene Butadiene(SBR)

Peroxide

89ET

12E / 80ET

Polyisoprene (IR)Cures

Natural (NR)
Polybutadiene (BR)

Issue 19

March 201912E / 80ET

33 A/B is first choice
36 may be best choice for complex or large parts
65W bonds a wide range of compounds
36 has ultimate heat resistance to 250ºC
With 33 A/B, a 3 : 2 mix ratio may improve bonding
12E / 80ET bonds all cure types.
24 and 12E / 80ET first choices for higher
temperature glycol, oil and fluid resistance.
24 works best with ‘S’ cures, especially at ≥1 pph.

Page 1 of 3

KOMMERLING UK LTD
217 Walton Summit Road, Bamber Bridge, Preston PR5 8AQ, UK
Telephone : +44 1772 322 888, Fax : +44 1772 315 853
E-mail : cilbond@hbfuller.com Web : www.kommerlinguk.com
Certificate Number FM 647341

CILBOND® ELASTOMER BONDING GUIDEELASTOMERPolynorbornene (PNR)

S Cures

CILBOND
1 COATSYSTEM

CILBOND
2 COATSYSTEM

COMMENTS
Please read before selection

2489ET

12E / 24
12E / 80ET

24 is first choice.
A pre-bake may be necessary, especially for very
soft compounds.
10E best suited for oil seals
12E / 80ET most versatile for all types of NBR
10E / 80ET well suited for roller applications
62W has maximum oil / fuel resistance

10E89ET

62W

62W
10E
10E
2489ET

89ET

10E
2489ET
3689ET
62W

12E / 80ET
10E / 80ET

Nitrile (NBR)
Peroxide
Cures
Carboxylated NBR (XNBR)S Cures
Hydrogenated NBR(HNBR)

PeroxideCures

12E / 80ET
10E / 80ET
12E / 80ET

12E / 80ET is usually 1st choice, but 10E is 1stchoice for oil / shaft seals.

12E / 80ET

For 1 coat system a pre-bake may be necessary.
12E / 80ET is the most versatile, having best
environmental resistance properties.
24 may post-vulcanisation bond all cure systems.
36 and 65W suit oil seal applications
12E / 80ET suits all types of cure systems
12E / 80ET is 1st choice.

62W

12E / 80ET
65W
12E / 65W
12E / 80ET

Acrylic Reinforced / Modified
HNBR

3689ET

65W

PVC / NBR Blends

10E62W

89ET

2489ET

12E / 80ET

Polypropylene Oxide (Parel)Castable Polyurethane (PU)Hot cure : 90-110C49SF 45SF 48
49SF+B

49SF+B / 49SF

(see footnote)
Castable Polyurethane (PU)
Quasi systems : 50-80C49SF
49SF+B

49SF+B / 49SF

(see footnote)
Castable Polyurethane (PU)Cold Cure : ≥ 20C, including
sprayed and rotational cast PU(see footnote)

10E / 80ET

48

41+B
41+B
49SF+B

4148

49SF
45SF

48

TPU

Millable PU

89ET
48

49SF

3665W

33A/B
3665W

Peroxide cured Silicone (VMQ)
and Fluorosilicone (FVMQ)

Pt / Pd cured Silicone

Issue 19March 201912E / 80ET

10E is 1st choicePre-bakes may be necessary

45SF or 49SF is the standard for
Vulkollan, Adiprene, Vibrathane etc.
49SF + Cilcure B and 48 give the ultimate in waterand heat resistanceFor bonding Quasi systems at
50-80°C with 49SF a pre-bake is required.
For improved environmental resistance use
49SF + Cilcure B, or 41+ Cilcure B
Use 41 for standard polyol / isocyanate cold cures.
41+ B or 49SF+B best for amine-based fast curesand for exceptional environmental resistance.
49SF and 48 are the standards for TPU
Pre-bakes are recommended for best results
Avoid moulding onto cold metals.
48 and 49SF for NCO cures.
12E / 80ET for peroxide and ‘S’ cures
89ET will bond all cure types
65W bonds a wide range of compounds.
Use 36 for high temperature/dynamic situations.
36 or 33 A/B for FVMQ.
65W bonds a wide range of compounds.
Use 36 for high temperature / dynamic situations.

Page 2 of 3

The information given herein is believed to be correct. However, we cannot by reason of the many different conditions under which this information andour products may be used guarantee the applicability of the accuracy of the information or the suitability of our products in any given situation. We
cannot accept liability for any injury loss or damage resulting from reliance upon such information nor can we assume liability for the use of theseproducts in the infringement of any patent rights. All sales of these products shall be subject to our Standard Conditions of SaleCILBOND® ELASTOMER BONDING GUIDEELASTOMERCILBOND
1 COATSYSTEM

Siliconised EPDM

89ET

CILBOND
2 COATSYSTEM

COMMENTS
Please read before selection

12E / 80ET

89ET

12E / 89ET
12E / 80ET

TPEEngage - Ethylene octene
copolymer (OEM)AEM,
Ethylene Acrylate
Copolymere.g., Vamac

S Cures
Vamac GPeroxideCuresVamac D

12E / 80ET
89ET
203624
10E 89ET
36 89ET 65W
62W
24

12E / 80ET
12E / 80ET

12E / 80ET
(Vamac / Viton alloys)

Ethylene Vinyl Acetate (EVM)
Miscellaneous bonding Cast or cured PU to cured NR,CR, CSM or NBR compounds
EPDM / CR(moulding EPDM to cured CR)

EPDM / CPE

89ET first choiceUse 20 for bonding Vamac G series, giving heat
resistance to >200ºC.
24 for general purpose.
36 bonds both series.
36 gives excellent long-term heat resistance.
12E / 80ET bonds both series equally well
12E / 80ET bonds all alloys, even Viton®
rich blends.

24
36

12E / 80ET

12E / 80ET bonds a wide range of compounds
and is first choice

89ET
41+B

89ET / 49SF+B
89ET / 48

20ºC minimum to activate 41+B onto cured rubber
70ºC minimum to activate 89ET onto cured rubber
95C minimum to activate 80ET onto cured rubber

89ET / 80ET

Prime the freshly flame or ionisation treated PPwith 89ET. Using a cover of 80ET allows
coated parts to be stored / transported.
Pre-bake 49SF on metal.
If feasible, have metals at >120ºC when moulding
the Hytrel.

89ET
80ET
89ET
80ET
89ET

Polypropylene bonding
49SF

48

49SF/ 45SF

Hytrel/ Metals

NOTES:
1. The following are trademarks:
Vamac® is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates
ENGAGE® is a Trademark of The Dow Chemical Company or an affiliated company of Dow
Hytrel® is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates
Vulkollan® is a registered trademark of Covestro Deutschland AG
Adiprene® and Vibrathane are registered trademarks of Chemtura Corporation
2. For Cilbond 41 + B or Cilbond 49SF + B, ‘B’ = Cilcure B.
Use a mixing ratio of Cilbond 41 + Cilcure B= 100:5 (wt : wt)

Cilbond 49SF + Cilcure B = 100:10 (wt : wt)

3. Cilbond 89ET has superb bonding capability, but contains isocyanate. This restricts its processing versatility, especially forautomated application processes and storage of coated parts.
4. For more information on any of the recommendations, see the Technical Data Sheet.
5. For further information on Substrate Preparation see Information Sheets A1 and C19
6. For further information on Methods of Application see Information Sheet A7.

Issue 19March 2019

Page 3 of 3

The information given herein is believed to be correct. However, we cannot by reason of the many different conditions under which this information andour products may be used guarantee the applicability of the accuracy of the information or the suitability of our products in any given situation. We
cannot accept liability for any injury loss or damage resulting from reliance upon such information nor can we assume liability for the use of theseproducts in the infringement of any patent rights. All sales of these products shall be subject to our Standard Conditions of Sale