3M™ Urethane Foam Tape 4318

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Charcoal gray, 0.125 in. (3 mm) soft conformable, low-density, open-cell foam design helps seal out air, dust and light when compressed

Excellent cushioning characteristics and high absorbency

Dampens sounds and absorbs vibration when used in electronic applications

Overall Width (Imperial)

Overall Width (Metric)

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Details

Highlights

Charcoal gray, 0.125 in. (3 mm) soft conformable, low-density, open-cell foam design helps seal out air, dust and light when compressed
Excellent cushioning characteristics and high absorbency
Dampens sounds and absorbs vibration when used in electronic applications
Offers high initial quick-stick to multiple substrates
Provides excellent shear strength and high temperature performance

3M™ Urethane Foam Tape 4318 is a conformable, low-density, open-cell foam tape with a pressure sensitive acrylic adhesive on one side. This tape will adhere to a variety of substrates and can be used in numerous mounting applications to dampen sound and create a clean and durable product.

3M™ Urethane Foam Tape 4318 is 1/8 in. thick, comprised of a soft conformable, low-density, open-cell foam with a pressure sensitive acrylic adhesive on one side.

When compressed 50%, the open cell construction of 3M Urethane Foam Tape 4318 provides an air barrier and cushion in electronic equipment

Seals Out Moisture, Dust and Drafts
3M™ Urethane Foam Tape 4318 is 1/8 in. thick, comprised of a soft conformable, low-density, open-cell foam with a pressure sensitive acrylic adhesive on one side. The adhesive is protected by a silicone treated paper liner. It offers excellent cushioning characteristics while providing high absorbency to seal out moisture, dust and drafts. It can perform under a wide range of temperatures. Special note: Extra care should be taken when handling to avoid damaging tape.

Recommended Applications

Cushion and dampen sound in electronics such as printers, keyboards, computers, aircraft lights and automotive dashboards
Register covers
Recessed lighting
Door, window and cabinet seals

Excellent Shear Holding Strength with 3M™ Adhesive 430
3M™ Urethane Foam Tape 4318 features 3M™ Adhesive 430. This pressure sensitive, modified acrylic adhesive provides high initial quick-stick to a variety of surfaces and substrates. It has an excellent chemical resistant and shear holding strength, even at elevated temperatures. Adhesive 430 is designed to perform at temperatures up to 180°F (82°C) in the short term and 150°F (70°C) long term.

Protect Sensitive Components
The adhesion of 3M™ Single-Coated Foam Tapes is typically satisfactory within 20 minutes and continues to build with additional time. The adhesive is protected by a thick, silicone treated paper liner and has a firm, high-density foam. This design offers an attractive and clean appearance after application.

What is Open Cell Foam?
Open cell foams are commonly used between component panels where a degree of separation is needed to dampen or prevent vibration, as a thermal insulation barrier and to protect against contamination, but where a measure of airflow is still necessary, such as with electronic components where air flow helps keeps components cool.

Typical properties

Details

Adhesive Type	Acrylic
Application	Window and Door Glazing, Sealing
Backing (Carrier) Material	Urethane
Backing (Carrier) Thickness (Imperial)	125 mil
Backing (Carrier) Thickness (Metric)	3.2 mm
Brands	3M™
Density (Imperial)	2 lb/ft³
Density (Metric)	32 kg/m³
Indoor/Outdoor	Indoor/Outdoor
Industries	Specialty Vehicle, Transportation, Appliance, Construction, General Industrial
Maximum Operating Temperature (Celsius)	66 ℃
Maximum Operating Temperature (Fahrenheit)	150 ℉
Minimum Operating Temperature (Celsius)	-29 ℃
Minimum Operating Temperature (Fahrenheit)	-20 ℉
Number of Adhesive Sides	Single-sided
Primary Liner	Silicone Treated Paper
Primary Liner Thickness (Imperial)	3 mil
Primary Liner Thickness (Metric)	0.08 mm
Product Color	Charcoal Gray
Shelf Life	24 Month
Smallest Saleable Unit	Roll
Tensile Strength (Imperial)	25.0 lb/in
Tensile Strength (Metric)	170 kPa
Total Tape Thickness without Liner (Imperial)	125 mil
Total Tape Thickness without Liner (Metric)	3.2 mm
Units per Case	6.0, 9.0, 12.0, 18.0, 24.0, 36.0

Dimensions and Classifications

Overall Length (Imperial)	36 yd
Overall Length (Metric)	32.9 m, 32.91 m, 32.918 m
Overall Width (Imperial)	0.25 in, 0.37 in, 0.5 in, 0.75 in, 1 in, 2 in, 4 in
Overall Width (Metric)	1.3 mm, 2.5 mm, 6.35 mm, 9.52 mm, 19.05 cm, 50.8 cm, 101.6 mm

Resources

3M™ Urethane Foam Tape 4318

Article Information Sheet

Document Number: MSDS_2589471_US_EN_AIS

(PDF)

Reviews

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	Current product 3M™ Urethane Foam Tape 4318	3M™ Urethane Foam Tape 4108	3M™ Urethane Foam Tape 4116	3M™ Urethane Foam Tape 4314
Overall Width (Metric)	1.3 mm, 2.5 mm, 6.35 mm, 9.52 mm, 19.05 cm, 50.8 cm, 101.6 mm
Overall Width (Imperial)	0.25 in, 0.37 in, 0.5 in, 0.75 in, 1 in, 2 in, 4 in
Backing (Carrier) Material	Urethane
Product Color	Charcoal Gray
Adhesive Type	Acrylic
Number of Adhesive Sides	Single-sided

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3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.