3M™ Urethane Foam Tape 4318, Charcoal Gray, 4 in x 36 yd, 125 mil, Roll

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.
Special Price $273.26 Regular Price $321.48
3M ID 7010569633
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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.


  • 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
More Information
3M ID 7010569633
Keywords 3M, urethane foam tape, foam tape, 3M Urethane Foam Tape 4318, low-density foam tape, open-cell foam tape, pressure sensitive acrylic adhesive, sound dampening tape, vibration absorption, moisture seal tape, dust seal tape, draft seal tape, high absorbency tape, cushioning characteristics, electronic applications, high temperature performance, adhesive 430, chemical resistant tape, silicone treated paper liner, automotive applications, commercial solutions tape, construction tape, manufacturing tape, aerospace tape, appliance tape, bonding and assembly, building maintenance tape, defense tape, marine tape, metalworking tape, OEM tape, personal recreation vehicles tape, rail applications, electronic component tape, thermal insulation barrier, air flow foam tape, keyboards damping, printers damping, aircraft lights insulation, automotive dashboards insulation, recessed lighting seal, door seals, window seals, cabinet seals.
Global Product Hierarchy Tapes > Foam Tapes > General Purpose Foam Tapes
Application Sealing, Window and Door Glazing
Backing (Carrier) Material Urethane
Backing (Carrier) Thickness (Imperial) 125.0 mil
Backing (Carrier) Thickness (Metric) 3.2 mm
Color Family Gray
Number of Adhesive Sides Single-sided
Product Color Charcoal Gray
Product Number 4318
Product Type simple
Quantity 0
Shelf Life 24.0 Month
Trademark 1 3M™
Trademark 2 3M™
Country of Origin United States
SAP Shelf Life In Days 730
Base - Billing Unit ROL
Base - Metric Gross Weight 1072.42 G
Base - Item Quantity 1
Base - Unit ROL
Shipper - Total Unit Quantity 1
Shipper - Previous Packaging Level Quantity 1
Pallet - Previous Packaging Level Unit LOOS
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