INSULATING FOAM SEALANT

Consumer 

Safety Information

Warnings and Precautions

• Flammable vapors: Shut off all pilot lights 

and sources of ignition.

• Contains isocyanate; extremely sticky 

and diffi cult to remove: Do not breathe 

fumes or get on skin. 

Spray contents carefully. 

Use in well-ventilated 

areas, and wear gloves, 

safety glasses or goggles 

and protective clothing.

• Contents under 

pressure: Do not puncture, incinerate or store 

in areas of high heat.

• KEEP AWAY FROM CHILDREN.

Description

GREAT STUFFTM Insulating Foam Sealant is a polyurethane 

plastic foam sold in aerosol cans. Once the foam is 

sprayed from the can, it immediately begins to cure 

and dry into a hard plastic. It sticks permanently 

to most surfaces. The wet chemical in the foam is 

isocyanate, which is hazardous. The blowing agent 

is highly fl ammable.

Instructions

1. KEEP AWAY FROM CHILDREN. 

GREAT STUFFTM Insulating Foam Sealants 

contain dangerous chemicals and should not be 

used by or around children.

2. Shut off all sources of ignition or open fl ames during use, 

including pilot lights on stoves, dryers, furnaces and water 

heaters, candles, cigarettes and electrical devices. Fumes 

released during application can travel long distances and 

accumulate in low-lying areas, creating a fi re 

or fl ashback hazard. Open fl ames in adjacent 

rooms behind neighboring walls should also 

be shut off. Keep the area free from all sources 

of ignition until all fumes have dissipated.

3. Provide plenty of fresh air or ventilation. Open windows 

and doors, and create additional airfl ow as 

necessary to disperse fl ammable vapors and 

prevent the inhalation of isocyanate fumes. If 

no ventilation is available and the foam is being 

sprayed in a small, confi ned area, wear a NIOSHapproved respirator equipped with an organic 

vapor sorbent and P100 particulate fi lter. Overexposure to 

isocyanate can irritate the eyes, nose, throat and lungs. It 

may also result in an allergic respiratory response, such as 

asthma, or decreased lung function. Overexposure may lead 

to permanent sensitization to isocyanate. FIRST AID: Move 

to fresh air. If breathing is diffi cult, give oxygen. If 

breathing has stopped, give artifi cial respiration. Seek 

medical attention.

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accumulate in low-lying areas, creating a fi re 

1. 

®TMTrademark of The Dow Chemical Company (“Dow”) or an affi liated company of Dow
INSULATING FOAM SEALANT

4. Wear gloves, protective clothing and safety glasses or goggles.

 A. Eye contact with wet foam may 

cause irritation or injury. If the foam 

dries and hardens on the eye, it 

becomes diffi cult to remove and will 

be painful. FIRST AID: Flush eyes 

with water for 15 minutes. Seek 

medical attention.

 B. Prolonged skin contact with wet, uncured foam may cause 

irritation and may stain skin. Skin contact may cause an allergic 

reaction or lead to respiratory sensitization. If wet or uncured 

foam gets on skin, quickly and carefully wipe it off using a cloth 

without spreading the foam around; wash with soap and water. 

Within minutes, wet foam will dry and bond to surfaces and skin. 

Once the foam has dried, it cannot be removed with any solvents 

or cleansers. Cured foam that has dried onto skin or surfaces 

must be mechanically removed or allowed to wear off in time. 

Frequent soaking of the skin in warm, soapy water followed by 

application of petroleum jelly or vegetable oil may help. The use 

of a pumice stone or gritty cleansers may 

also help remove cured foam. These 

materials should not be used on the face 

or on areas with a lot of hair. FIRST AID: 

Wash skin with plenty of soap and 

water. If pain or irritation persists, 

seek medical attention.

5. The contents are under pressure and should not 

be stored in areas of high heat or above 120°F 

(49°C). Do not store cans in hot vehicles or 

around heaters. Do not puncture or incinerate. 

Do not store cans in moist environments where the 

cans could rust or corrode.

6. Cured foam is combustible and will burn if exposed 

to temperatures above 240°F (116°C). Do not 

apply GREAT STUFFTM foam around heaters, high 

heat lamps or recessed lighting fi xtures, radiators, 

furnaces or fi replaces where it could contact heatconducting surfaces. Do not use GREAT STUFFTM foam 

inside electrical boxes or panels (applications around the 

boxes are permitted).

7. Once cured, GREAT STUFFTM foam forms a nonhazardous 

solid and is nontoxic if ingested by pets. However, it could 

block the intestines. If signs of distress are exhibited, seek 

medical or veterinary care.

8. Do not force the nozzle of expired or partially used cans or 

cans with valves sealed shut. Foam inside the can continually 

dries or cures at a slow rate. Each can is marked with an 

expiration date, beyond which the contents may have cured 

and be unable to spray. Forcing the nozzle may break it 

open and allow the contents to escape. If the can has been 

used before, the foam will cure in the nozzle and straw and 

seal shut within two hours. One-time use of the can should 

be expected.

Disposal

Disposal of full or partially used aerosol 

cans must be in compliance with all federal, 

state/provincial and local laws and regulations. Regulations vary 

in different locations. Empty cans are not considered hazardous 

waste and may be disposed of as nonhazardous household waste.

Contents

See can label.

Additional Information

Find additional information and the Product Safety Assessment 

for One-Component Polyurethane Foam Sealants and Adhesives 

at www.dowgreatstuff.com. You may also contact The Dow 

Chemical Company at 866-583-2583 (BLUE). General information 

regarding the safe use of polyurethane foams can also be found at 

www.spraypolyurethane.org.

The Dow Chemical Company urges each customer or recipient of this MSDS to study it carefully 

and consult appropriate expertise, as necessary or appropriate, to become aware of and understand 

the data contained in this MSDS and any hazards associated with the product. The information 

herein is provided in good faith and believed to be accurate as of the effective date shown below. 

However, no warranty, express or implied, is given. Regulatory requirements are subject to change 

and may differ between various locations. It is the buyer’s/user’s responsibility to ensure that his 

activities comply with all federal, state, provincial or local laws. The information presented here 

pertains only to the product as shipped. Since conditions for use of the product are not under the 

control of the manufacturer, it is the buyer’s/user’s duty to determine the conditions necessary for 

the safe use of this product. Due to the proliferation of sources for information such as manufacturerspecifi c MSDSs, we are not and cannot be responsible for MSDSs obtained from any source other 

than ourselves. If you have obtained an MSDS from another source or if you are not sure that the 

MSDS you have is current, please contact us for the most current version.

®TMTrademark of The Dow Chemical Company (“Dow”) or an affi liated company of Dow

Printed in U.S.A. Form No. 179-15047-0510P&M

 178-01086-0510P&M

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Consumer Safety Information

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Published May 2010