Premium 7 mil double-coated membrane switch spacer with High Performance Acrylic Adhesive 200MP. Features excellent shear strength, clean edges, and superior temperature resistance (-40°F to 400°F). Ideal for switch actuation, circuit layer assembly, and die-cut laminations in industrial applications.
The 3M™ Membrane Switch Spacer 7957MP is a premium double-coated adhesive spacer specifically engineered for membrane switch applications requiring exceptional durability and precision. This 7 mil spacer features 3M's High Performance Acrylic Adhesive 200MP formulated to deliver outstanding shear strength while resisting slippage and edge lifting during repeated switch actuation cycles. The product combines 2 mil acrylic adhesive layers on each side with a robust 3 mil polyester film carrier, creating a resilient construction that maintains performance across demanding industrial applications.
Designed to separate switch circuitry until actuation, this membrane switch spacer excels in applications ranging from farm tractors and medical test systems to microwave ovens and fish finders. The clear transparent color and precise 7 mil thickness make it ideal for applications requiring clean aesthetics and exact dimensional specifications. The double-lined construction with 4.2 mil, 58 lb. polycoated kraft paper liners provides exceptional dimensional stability and resists humidity, curling, tunneling, and buckling during storage and processing.
The spacer's advanced adhesive formulation creates neat, clean edges for precise slitting and die-cutting operations, enabling faster part processing and minimal waste. With excellent temperature resistance up to 400°F (204°C) short-term and superior performance after exposure to humidity and hot/cold cycles, this product delivers confidence for millions of actuations in difficult environmental conditions. The lay-flat liner design enables improved rotary die-cutting at high speeds and enhanced sheet processing efficiency, making it the preferred choice for high-volume membrane switch manufacturing.
Key Features
- 7 mil double-coated spacer withstands repeated stress of switch actuation cycles
- 2 mil acrylic adhesive on each side delivers excellent shear strength and resists slippage
- 3 mil polyester film carrier provides structural strength and stability
- High Performance Acrylic Adhesive 200MP resists oozing at edges for clean die-cuts
- Double 4.2 mil polycoated kraft paper liners resist humidity, curling and tunneling
Technical Specifications
| Specification |
Value |
| Product Number | 7957MP |
| Total Tape Thickness without Liner | 7 mil (0.18 mm) |
| Adhesive Type | High Performance Acrylic Adhesive 200MP |
| Face Side Adhesive Thickness | 2 mil (0.05 mm) |
| Back Side Adhesive Thickness | 2 mil (0.05 mm) |
| Backing Carrier Material | Polyester Film (PET) |
| Backing Carrier Thickness | 3 mil (0.08 mm) |
| Product Color | Transparent/Clear |
| Primary Liner | 58# Polycoated Kraft Paper (Tan) |
| Primary Liner Thickness | 4.2 mil (0.11 mm) |
| Secondary Liner | 58# Polycoated Kraft Paper (Tan) |
| Secondary Liner Thickness | 4.2 mil (0.11 mm) |
| Maximum Operating Temperature | 400°F (204°C) short-term |
| Minimum Operating Temperature | -40°F (-40°C) |
| Operating Temperature Range | -40°F to 400°F (-40°C to 204°C) |
| Shelf Life | 18 Months |
| Smallest Saleable Unit | Sheet |
| Indoor/Outdoor Rating | Indoor/Outdoor |
| Industries Suitable | Aerospace, Appliance, Automotive, Electronics, Medical, Military, Transportation |
| Recommended Applications | Membrane switch spacers, Switch mounting, Circuit layer assembly, Metal dome placement, Lead protection, Die-cut laminations |
Order 3M Membrane Switch Spacer 7957MP Clear 7 mil at wholesale prices for companies and factories in Iraq and Middle East, get the best deals on bulk purchases, contact us today.
