Glassbond Sauereisen Electric Resistor Cement No

Glaassssbond Saaueerreei isseen Eleeccttrri 

icc Reessi issttorr Ceemeentt No. .78//3 

CChhaarraacctteerri iisstti iiccss 

RReeccoommeennddeedd FFoorr 

Heat conductive and thermal shock resistant Elements 

Safely insulates electricity Heaters 

Resists oil, solvents and most acids Hot Plates 

Resists temperatures to 2600°F (1427°C) Irons 

Odourless Ovens 

Resistors 

DDeessccrri iipptti iioonn 

Electric Resistor Cement No.78/3 is an ideal electrical refractory cement for coating resistors, coils, electric heating 

elements, furnaces and embedding resistance wire. It replaces insulating varnish, enamel, mica, etc. 

PPhhyssi y iiccaal ll PPrrooppeerrtti iieess 

Coefficient of thermal expansion 13.0 x 10 -6 in/in/°F (23.4 x 10 -6 cm/cm/°C) 

Colour 

Tan to grey 

Compressive strength 

3300 psi (232 kg/cm² 

Dielectric constant 3.4-4.5 

Dielectric strength 

@ 70°F (21°C) 12.5 to 51.0 Volts/mil (490 to 2000 Volts/mm ) 

@ 750°F (399°C) 

≤ 15.0 Volts/mil (588 Volts/mm) 

@ 1475°F (801°C) 

≤ 1.3 Volts/mil (51 Volts/mm) 

Maximum service temperature 

2600°F (1427°C) 

Shear strength 

375 psi (26.4 kg/cm²) 

Tensile strength 

325 psi (22.8 kg/cm²) 

Volume resistivity 

@ 70°F 

10 8 -10 9 ohm-cm 

@ 750°F 

10 5 -10 6 ohm-cm 

@ 1475°F 

10³-10 4 ohm-cm 

Physical properties were determined on specimens prepared under laboratory conditions using applicable ASTM procedures. 

Actual field conditions may vary and yield different results; therefore, data are subject to reasonable deviation. Data should not 

be used for specification purposes.

Application/Instructions 

No78/3 should be thoroughly remixed before using. Weigh approximately 33 parts powder and 10 parts water. Place 

powder in a clean mixing container. Add water to the powder at one time while mixing- do not add water gradually. 

Continue mixing until a smooth, uniform consistency is obtained. Mixing may be done with a slow-speed mixer or by 

hand with a spatula. Minimum amount of water should be used as excess water reduces mechanical strength, 

increases shrinkage and delays set time. Failure of cement to adhere indicates setting has begun- discard cement. Do 

not attempt to re-temper by adding more water. 

No.78/3 may be applied by brushing, dipping or spraying. No.78/3 is suitable for use on production lines with 

mechanical dispensers or applicators because it will not harden in the equipment during normal operation. No.78/3 

should be thoroughly remixed to a smooth, uniform consistency prior to use. Surfaces to receive No.78/3 should be 

clean and free of grease and dirt. Porous substrates should be dampened slightly with Thinning liquids Nos.14 or 15 

prior to the application of No.78/3. No.78/3 should be used in thin applications; apply several coats where a heavy 

layer is desired. In multiple coat applications, each coat must be thoroughly dry prior to applying additional coats. If 

necessary, Thinning Liquid Nos. 14 or 15 should be used where the No.78/3 cement is required in a thinner 

consistency. Minimum amounts of liquid should be used as excess liquid reduces mechanical strength, increases 

shrinkage and delays set time. No.78/3 should not be applied in a thickness greater than ¼ ". 

SSeetttti iinngg//CCuurri iinngg 

No.78/3 cures by air drying at room temperature. Drying time depends on the consistency and thickness of the 

application. Normally 18-24 hours drying at ambient temperature is sufficient. When the cement has minimal 

exposure to air, or if it is desired to accelerate the cure, low temperature oven drying at 82°C can be used. Avoid 

steaming while drying. If the cement will be exposed to elevated temperatures, contact Glassbond for appropriate 

drying schedule recommendation. 

If high humidity resistance is required and it is impractical to fire cement, moisture-resistant lacquer or silicone 

coating should be applied to the exposed surfaces. 

PPaacckkaaggi iinngg 

This material is supplied in various types and sizes of containers. See price list for details. 

SShheel llf f LLi iif fee 

No.78/3 powder has a shelf life of twelve (12) months when stored in unopened, tightly sealed containers in a dry 

location at 21°C. If there is any doubt as to the quality of the material, contact Glassbond. 

CCaauutti iioonn 

Consult the Material Safety Data Sheets and container label Caution Statements for any hazards in handling this 

material. 

Waarrrraannttyy 

We warrant that our goods will conform to the description contained in the order and that we have good title to all 

goods sold. WE GIVE NO WARRANTY, WHETHER OF MERCHANTABILITY, FITNESS FOR PURPOSE OR OTHERWISE, 

EXPRESS OR IMPLIED, OTHER THAN AS EXPRESSLY SET FORTH HEREIN. Users shall determine the suitability of the 

product for intended application before using. 

Manufactured under licence from Sauereisen Pittsburgh PA.

11 PPrroodduucct t Iddeennt I tificcaat 

tioonn: 

: 

PRODUCTT HEALLTTH AND SAFFETTY A DATTA SHEETT 

Glaassssbboonndd SSaauueerreei isseenn PP7788/ /33 Issssuuee I Noo 44, , Issssuuee I Daat tee 2244. .0088. .22000066 

SShheeeet t 11 oof f 44 

PPrroodduucct t Naamee: : Glassbond Sauereisen Electric Heater Resistor Cement P78/3 

PPaacckkaaggi inngg: : Plastic containers 

Deessccrri ippt ti iionn: o : Coating/embedding for resistors, coils and heating elements. 

Cool loouurr aanndd aappppeeaarraannccee: : White powder 

SSuuppppl lieerr' 

''ss nnaamee aanndd aaddddrressss: e : Glassbond (NW) Limited 

Westside Industrial Estate 

Jackson Street 

St Helens 

Merseyside WA9 3AT 

UK 

TTeel l Noo: : +44 (1744) 730334 

FFaaxx Noo: : +44 (1744) 451661 

Maannuuf faacct tuurreerr' ''ss nnaamee aannd d aaddddrreessss: : Glassbond (NW) Limited 

Westside Industrial Estate 

Jackson Street 

St Helens 

Merseyside WA9 3AT 

UK 

22 Coomppoossi itioonn/ 

/Innf 

foorrmaat tioonn oonn Innggreeddi I r ieenntss t 

CAS No Components Range Risk Classification 

14808-60-7 Silica Flour 40 R20, R48/20 Xn 

1344-09-8 Sodium Silicate 10 R37/38 Xi

33 Heeaal lthh Haazzaarrddss Daat taa 




The dust arising from this product is mainly fibrogenic potential. It could be harmful if swallowed or 

ingested and is irritating to skin, eyes and respiratory system. Refer to Section 8 for Occupational 

Exposure Limits. 

44 FFi irrsst t Aidd i Meeaassuurreess 

SKIN CONTACT: 

EYE CONTACT: 

INHALATION: 

INGESTION: 

Wash thoroughly with soap and water. Remove contaminated clothing. Seek 

medical advice if irritation persists. 

Irrigate with copious quantities of water for at least 15 minutes. Seek medical 

advice. 

Remove to fresh air at once. In the event of respiratory difficulties apply standard 

first aid techniques and seek medical advice. 

DO NOT induce vomiting. Give large quantities of water. Seek medical attention. 

55 FFi irreef figghht 

tinngg i Meeaassuurress e (aanndd ( EExxppl loossi ioonn Haazzaarrddss) ) 

Not flammable. 

66 Acccci iddeent ntaal 

l Reel leeaassee/ /SSppi illaaggee Meeaassuurreess 

Sweep or vacuum up wearing all the recommended protective equipment. 

77 Haannddl linngg aanndd SStoorraaggee t Reeccoommeennddaat tioonnss 

Store in a cool dry place in original packaging away from food stuffs. 

88 PPeerrssoonnaal l PPrroot teecct tioonn aanndd EExxppoossuurree Coonnt trrool lss 

Maat teerri iaal l 

OEELL 

Haanndd PPrroot teecct tioonn: 

: Tear resistant industrial gloves Crystalline Silica 0.4mg/m 3 MEL 

8hr TWA 

Reesppi s irraat toorryy: : If conditions generate dust, Total Inhalable 10mg/m 3 OES 8hr 

wear an approved respirator Dust TWA 

appropriate for those emission 

levels. 

EEyyee PPrroot teecct tioonn: 

: Safety spectacles with side shields. 

An eyewash station should be available. 

Personal: 

Overalls and safety footwear.




99 PPhhysi 

iccaal l aanndd Chheemi iccaal l PPrrooppeerrt ti iieess/ /SSaaf feet tyy SSppeecci ificcaat 

tioonnss 

Colour and Appearance: White Powder 

Changes in State: Stable 

Density: 1.10 g/cm 3 (20°C) 

Compacted Bulk Density: 1.60 g/cm 3 (20°C) 

Vapour pressure: N/A 

Viscosity: 

N/A 

Solubility in Water: Less then 15% (20°C) 

pH value: Slightly Alkaline (20°C) 

Stability: 

Stable 

Flash Point: 

Non-flammable 

Ignition Temperature: N/A 

Explosion Limits: N/A 

1100 SSt taabbi ilityy aanndd Reeaacct tivvi 

ityy 

Haasaarrddoouuss s PPrroodduucct tss oof f TThheerrmaal l Deeccoomppoossi itioonn 

Hazardous Reactions 

None 

Aqueous solutions may react with 

aluminium, zinc and tin evolving 

hydrogen gas. 

1111 TTooxxi iccool looggi iccaal l Innf I foorrmaat tioonn 

EYES: 

SKIN: 

INGESTION: 

INHALATION: 

Irritation. May cause serious damage to eyes. 

Irritation. Ulceration may occur from prolonged or repeated contact. Pain and 

redness at site of contact. 

Nausea, vomiting and diarrhoea. Seek medical attention. 

Irritation of the nose, throat and lungs. The dust arising from this product is 

mainly fobrogenic potential and should be controlled to the Crystalline Silica 

OEL. (See Section 8). 

1122 EEccool looggi iccaal l Innf I foorrmaat tioonn 

This product does not constitute a risk to the environment. 

1133 Dissppoossaal 

l Coonnssi iddeerraat tioonnss 

In accordance with local authority regulations.

1144 TTrraannssppoorrt t Innf I foorrmaat tioonn 




ADR/RID/IMDG/ICAO – Description 

Not classified for conveyance purposes. 

Not classified as dangerous goods under the UN Transport Recommendations. 

1155 Reeguul g laat tooryy r Innf I foorrmaat tioonn 

Supply classification - HARMFUL 

Risk Phrases: . R20 Harmful by inhalation. 

R48/20 Harmful – danger of serious damage to health 

by prolonged exposure through inhalation. 

Safety Phrases: S22 Do not breathe dust. 

1166 Othheerr Innf I foorrmaat tioonn 

S37 

S26 

Wear suitable gloves. 

In case of contact with eyes, rinse immediately 

with plenty of water and seek medical advice. 

This data sheet has been compiled in accordance with the Chemicals (Hazard Information and Packaging 

for Supply). Regulations 1994.

Glassbond Sauereisen Electric Resistor Cement No

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