Premium 3.5 mil double-coated membrane switch spacer with high-performance acrylic adhesive, polyester carrier, and moisture-resistant liners for precision switch assembly and circuit separation.
The 3M™ Membrane Switch Spacer 7953MP is a premium double-coated adhesive spacer designed specifically for membrane switch applications requiring exceptional durability and precision. This 3.5 mil thick spacer features 3M's High Performance Acrylic Adhesive 200MP applied at 1.5 mils to each side of a 0.5 mil polyester film carrier, creating an ideal solution for separating switch circuitry until actuation. The spacer is engineered to withstand repeated stress of switch actuation over extended periods while maintaining dimensional stability and precise edge definition.
The product delivers outstanding performance characteristics including excellent shear strength, superior adhesion to plastics and smooth surfaces, and minimal edge oozing for faster part processing. Double 4.2 mil 58 lb. polycoated kraft paper lay-flat liners provide consistent adhesive coverage and resist curling, tunneling, and buckling. These moisture-resistant liners ensure reliable performance under high humidity conditions and enable efficient storage and processing. The spacer operates reliably across a wide temperature range from -40°F to 400°F, making it suitable for demanding industrial applications.
Ideal for membrane switch spacers, switch mounting, circuit layer assembly, metal dome placement, lead protection, and die-cut laminations, the 3M™ Membrane Switch Spacer 7953MP combines superior adhesive chemistry with precision engineering. The product demonstrates excellent resistance to solvents and UV exposure while providing some initial repositionability for placement accuracy. With an 18-month shelf life and availability in sheet format, this industrial-grade spacer meets the stringent requirements of aerospace, appliance, automotive, electronics, and medical device manufacturers.
Key Features
- 3.5 mil double-coated spacer withstands repeated stress of switch actuation
- 1.5 mil acrylic adhesive delivers excellent shear strength and resists slippage
- 0.5 mil polyester film carrier provides structural strength and stability
- Double 4.2 mil polycoated kraft paper liners resist moisture, curling and tunneling
- Operates reliably from -40°F to 400°F with excellent solvent and UV resistance
- Minimal edge oozing enables faster part processing and cleaner die-cutting
- High-performance 200MP adhesive provides initial repositionability for placement accuracy
- 18-month shelf life with lay-flat liner design for efficient storage and processing
Technical Specifications
| Specification |
Value |
| Product Number | 7953MP |
| 3M ID | 7100013210 |
| Total Tape Thickness without Liner (Imperial) | 3.5 mil |
| Total Tape Thickness without Liner (Metric) | 0.09 mm |
| Adhesive Type | High Performance Acrylic Adhesive 200MP |
| Face Side Adhesive Thickness (Imperial) | 1.5 mil |
| Face Side Adhesive Thickness (Metric) | 0.04 mm |
| Back Side Adhesive Thickness (Imperial) | 1.5 mil |
| Back Side Adhesive Thickness (Metric) | 0.04 mm |
| Backing (Carrier) Material | Polyester Film |
| Backing (Carrier) Thickness (Imperial) | 0.5 mil |
| Backing (Carrier) Thickness (Metric) | 0.01 mm |
| Product Color | Transparent |
| Primary Liner | 58# Polycoated Kraft Paper |
| Primary Liner Color | Tan |
| Primary Liner Thickness (Imperial) | 4.2 mil |
| Primary Liner Thickness (Metric) | 0.11 mm |
| Secondary Liner | 58# Polycoated Kraft Paper |
| Secondary Liner Color | Tan |
| Secondary Liner Thickness (Imperial) | 4.2 mil |
| Secondary Liner Thickness (Metric) | 0.11 mm |
| Maximum Operating Temperature (Fahrenheit) | 400°F |
| Maximum Operating Temperature (Celsius) | 204°C |
| Minimum Operating Temperature (Fahrenheit) | -40°F |
| Minimum Operating Temperature (Celsius) | -40°C |
| Shelf Life | 18 Months |
| Indoor/Outdoor | Indoor/Outdoor |
| Smallest Saleable Unit | Sheet |
| Brand | 3M™ |
| Applicable Industries | Aerospace, Appliance, Automotive, Electronics, Medical, Manufacturing |
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