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USP Class VI Adhesives
USP Class VI Approved Adhesives for Medical Device Applications
Master Bond’s biocompatible adhesives are designed to meet the needs of medical device manufacturers. Compounds withstand various types of sterilization methods.

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Master Bond MB297Med-2 Ethyl Cyanoacrylate
Categories: Polymer; Adhesive; Thermoset; Acrylic/Cyanoacrylate Adhesive

Material Notes: Key Features:
  • One component, no mix system
  • Meets USP Class VI specifications
  • Fast setting
  • Rapid fixture time
Product Description: Master Bond MB297Med-2 is a single component ethyl cyanoacrylate type adhesive. This high strength, rapid curing system is used primarily for medical device assembly. MB297Med-2 is a lower viscosity (100-110 cps) cyanoacrylate. This kind of system, which is commonly referred to as an instant adhesive or super glue, cures very rapidly with the rate of cure dependent upon the humidity— the higher it is, the faster the cure. Because curing is normally so fast, minimal contact pressure is usually sufficient for bonding. It must be emphasized that this high strength system requires no heating or mixing. It typically sets up within 10-40 seconds depending upon the humidity and the substrates. The bond strength is exceptionally high in the shear mode. MB297Med-2 bonds well to a variety of substrates especially metals, plastics and rubbers. The service temperature range for this system is -60°F to +250°F. Most importantly, MB297Med-2 meets USP Class VI specifications for biocompatibility. MB297Med-2 can be used in a wide array of different medical applications ranging from repair to high speed production. It has first rate resistance to EtO and gamma sterilization processes. Although many of the applications for MB297Med-2 involve disposable type medical devices, it also can be utilized with reusable ones depending upon the service conditions.

Product Advantages:

  • Rapid curing at room temperature; usually sets up within 40 seconds
  • No heating or mixing
  • Contact pressure usually sufficient for fixturing
  • Bonds well to a wide variety of substrates
  • Excellent resistance to EtO and gamma sterilization
  • Passes USP Class VI testing
  • Well suited for disposable and reusable medical devices

Information provided by Master Bond Inc.

Vendors: Master Bond is a leading manufacturer of adhesives, sealants, coatings and potting compounds. Master Bond’s vast product line consists of over 3,000 epoxy, polyurethane, silicone, cyanoacrylate and latex adhesives that vary in viscosity, cure speed, strength, chemical resistance, electrical properties, etc. Our custom adhesives offer design flexibility and provide excellent bonding performance. Visit www.masterbond.com.

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.05 g/cc
Viscosity 100 - 110 cP
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 70
Tensile Strength 5000 psi
Elongation at Break 2.0 - 3.0 %
Tensile Modulus 200000 - 250000 psi
Adhesive Bond Strength 210 psiButyl-Butyl, Tensile lap; Substrate Failure
 300 psiSteel-Natural Rubber, Tensile lap; Substrate Failure
 350 psiSteel-Butyl, Tensile lap; Substrate Failure
 420 psiNatural Rubber-Natural Rubber, Tensile lap; Substrate Failure
 440 psiSBR-SBR, Tensile lap; Substrate Failure
 470 psiNeoprene-Steel, Tensile lap
 510 psiNBR-NBR, Tensile lap; Substrate Failure
 510 psiNitrile-Nitrile, Tensile lap; Substrate Failure
 520 psiNeoprene-Neoprene, Tensile lap; Substrate Failure
 570 psiPolystyrene-Polystyrene, Tensile lap; Substrate Failure
 850 psiDelrin-Delrin, Tensile lap
 880 psiNylon-Nylon, Tensile lap
 920 psiNylon-Bakelite, Tensile lap
 950 psiNBR-Aluminum, Tensile lap
 1050 psiAluminum-Aluminum, Tensile lap
 1050 psiChromium-Chromium, Tensile lap
 1220 psiPhenolic-Phenolic, Tensile lap
 1230 psiABS-ABS, Tensile lap; Substrate Failure
 1410 psiNylon-Copper, Tensile lap; Substrate Failure
 1580 psiAluminum-Stainless Steel, Tensile lap
 1650 psiSteel-Stainless Steel, Tensile lap
 2050 psiSteel-PVC (rigid), Tensile lap; Substrate Failure
 2085 psiPolyester-Polyester, Tensile lap
 2300 psiCopper-Copper, Tensile lap
 2310 psiSteel-Aluminum, Tensile lap
 2330 psiStainless-Stainless, Tensile lap
 2340 psiSteel-Steel, Tensile lap
 2350 psiBrass-Brass, Tensile lap
 2670 psiPVC(rigid)-PVC(rigid), Tensile lap; Substrate Failure
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity <= 1.00e+15 ohm-cm
Dielectric Constant 3.6
@Frequency 1000 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 70.0 - 75.0 µm/m-°C
Maximum Service Temperature, Air 250 °F
Softening Point 290 - 300 °F
Minimum Service Temperature, Air -60.0 °F
 
Processing PropertiesOriginal ValueComments
Cure Time 0.167 - 0.670 minset up time, substrate dependent
Shelf Life 6.00 Month
@Temperature 4.44 - 10.0 °C
in original, unopened containers
 
Compliance PropertiesOriginal ValueComments
USP Class VI Yes
 
Descriptive Properties
ColorColorless, transparent liquid

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