3M 7993MP Membrane Switch Spacer

3M 7993MP Membrane Switch Spacer Datasheet
  • Description for 3M 7993MP Membrane Switch Spacer

    Single side spacers aid in the construction of membrane switch circuitry, i.e. to protect leads, hold domes in place, or build your own spacer.

    *See Terms of Use Below

    Application Type Bond, Laminating
    1 Part or 2 Part 1 Part
    Material Form Sheet
    Substrate Aluminum, PET, Metal, Plastic, Polycarbonate, Polyester, Stainless Steel
    Industry Construction of membrane switch circuitry, i.e. to protect leads, hold domes in place, or build your own spacer
    Manufacturer 3M
    Chemistry Hi-Performance Acrylic
    Ozone Resistance Ozone resistance
    Chemical Resistance Excellent, mild acids, alkalies, oil, gasoline, kerosene, JP-4 fuel, cleaning solutions, germicidals
    Relative Solvent Resistance Chemical Resistance: Excellent Solvent
    High Temperature Resistance (°C) 149
    Other Resistance Oxidation resistance
  • Technical Data for 3M 7993MP Membrane Switch Spacer

    Overview
    Specifications
    Cure Specs
    Application Temperature (°F) 70 to 100
    Bond Strength
    General Bond Strength (psi) High
    Peel Strength (piw) 40 (oz./in.), 36 (oz./in.), 36 (oz./in.), 38 (oz./in.), 68 (oz./in.), 64 (oz./in.), 46 (oz./in.), 51 (oz./in.), 82 (oz./in.), 79 (oz./in.), 72 (oz./in.), 62 (oz./in.) Test Method
    Shear Strength (psi) Excellent
    Cleavage Strength (psi) High
    Tensile Strength (psi) 3,609 Test Method
    Material Resistance
    Ozone Resistance Ozone resistance
    Chemical Resistance Excellent, mild acids, alkalies, oil, gasoline, kerosene, JP-4 fuel, cleaning solutions, germicidals
    Relative Solvent Resistance Chemical Resistance: Excellent Solvent
    UV Resistance UV resistance
    High Temperature Resistance (°C) 149
    Moisture/Humidity Resistance Moisture resistance, 7 (days), Humidity Resistance Test Method
    Other Resistance Oxidation resistance
    Conductivity
    Dissipation Factor 0.01200 Test Method
    Insulation Resistance (O) 6.5 x 10(12) (Ohms) Test Method
    Dielectric Strength (V/mil) 1,700 Test Method
    Dielectric Constant 2.77 Test Method
    Surface Resistivity (O) > 5.6e16 (Ohms) Test Method
    Volume Resistivity (O) 2.7e15 (Ohm-cm) Test Method
    Other Properties
    Coefficient of Thermal Expansion (CTE) 4.5e-4 (M/M/°C) Test Method
    Business Information
    Shelf Life Details It is suggested that products are stored at room temperature conditions of 70°F (21°C) and 50% relative humidity.;If stored properly, product retains its performance and properties for 18 months from date of shipment.
    Shelf Life Temperature (°F) 70
    Shelf Life Type From date of shipment.
    Shelf Life (mon) 18
  • Best Practices for 3M 7993MP Membrane Switch Spacer

    *See Terms of Use Below

    1. Surface Preparation

      To obtain best adhesion, the bonding surfaces must be clean, dry, and smooth. Some typical surface cleaning solvents are isopropyl alcohol or heptane.

      Carefully read and follow the manufacturer’s precautions and directions for use when working with solvents.

    2. Application

      Initial tape application to surfaces at temperatures below 50°F (10°C) is not recommended because the adhesive becomes too firm to adhere readily. However, once properly applied, low temperature holding is satisfactory.

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    *See Terms of Use Below

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Peel Strength Test Methods
Peel Strength Type Substrate Test Time Test Temperature Test Method
40 (oz./in.) 90° Peel Strength PET/Stainless Steel 20 min ASTM D3330
36 (oz./in.) 90° Peel Strength PET/Aluminum 20 min ASTM D3330
36 (oz./in.) 90° Peel Strength PET/PET 20 min ASTM D3330
38 (oz./in.) 90° Peel Strength PET/Polycarbonate 20 min ASTM D3330
68 (oz./in.) 90° Peel Strength PET/Stainless Steel 4,320 min 22°C ASTM D3330
64 (oz./in.) 90° Peel Strength PET/Aluminum 4,320 min 22°C ASTM D3330
46 (oz./in.) 90° Peel Strength PET/PET 4,320 min 22°C ASTM D3330
51 (oz./in.) 90° Peel Strength PET/Polycarbonate 4,320 min 22°C ASTM D3330
82 (oz./in.) 90° Peel Strength PET/Stainless Steel 4,320 min 70°C ASTM D3330
79 (oz./in.) 90° Peel Strength PET/Aluminum 4,320 min 70°C ASTM D3330
72 (oz./in.) 90° Peel Strength PET/PET 4,320 min 70°C ASTM D3330
62 (oz./in.) 90° Peel Strength PET/Polycarbonate 4,320 min 70°C ASTM D3330
Tensile Strength Test Methods
Tensile Strength Test Temperature Test Method
3,609 psi 22°C ASTM D2370
Moisture/Humidity Resistance Test Methods
Moisture/Humidity Resistance Test Method
Moisture resistance
7 (days)
Humidity Resistance
Dielectric Constant Test Methods
Dielectric Constant Temperature Test Method
2.77 22°C ASTM D150
Dielectric Strength Test Methods
Dielectric Strength Test Method
1,700 V/mil ASTM D149 (Short time method (air))
Dissipation Factor Test Methods
Dissipation Factor Temperature Test Method
0.01200 22°C ASTM D150
Insulation Resistance Test Methods
Insulation Resistance Test Method
6.5 x 10(12) (Ohms) Mil-I-46058C (100VDC, 60 sec.)
Surface Resistivity Test Methods
Surface Resistivity Temperature Test Method
> 5.6e16 (Ohms) 22°C ASTM D257
Volume Resistivity Test Methods
Volume Resistivity Temp (°C) Test Method
2.7e15 (Ohm-cm) 22°C ASTM D257
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) CTE Temperature (°C) CTE Test Method
4.5e-4 (M/M/°C) 25 to 175°C ASTM D696