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Ensinger PEI

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Chesterton 860 Moldable Polymer Gasketing
Categories: Polymer

Material Notes: Chesterton® 860 Moldable Polymer Gasketing is a solid flexible gasketing material which fills in surface irregularities, stop leaks and never sticks to surfaces after curing. It is the one product to use to handle almost every gasketing application. MPG is easily formed into simple or complex shapes eliminating the necessity to inventory precut gaskets or sheets of gasketing. Waste, often 50% with conventional gasket sheeting material, is eliminated with this unique polymeric material. Using MPG, gaskets as thin as 0.13 mm (5 mil) can be formed. This fines the best fit between flanges and provides far superior pressure and chemical resistance. Because it forms a very quick seal. 860 MPG will hold up to 1 kg/cm2 (15 psi) as soon as equipment is assembled and up to 7 kg/cm2 (100 psi) in minutes. It can be used in applications ranging in temperature from -51°C to 260°C (-60°F to 500°F). Disassembly of equipment is always easy when sealed with a gasket made of 860 MPG. It will never bond mating surfaces together nor stick to the surface to which it is applied. After disassembly, just peel the gasket off. No scraping is every necessary. Cured 860 MPG conforms to paragraphs 175.300 and 177.2600 of 21 CFR of FDA (United States Food & Drug Administration) and meets NSF requirements for incidental food contact.

Features:

  • Never sticks to surfaces
  • Saves Labor - no more gasket cutting
  • Remains elastic - no aging
  • Form ultra-thin gasket
  • Fills gaps up to 6 mm (1/4 inch) deep
  • NSF P1 - Registration number 134017 and 134018

Applications: Solid gap filler and gasket replacement anywhere a tight seal is needed. Apply to flange surfaces and fittings including thread fittings, hose clamps and O-ring fittings. Fills in voids, scratches, gouges and distortions p to 6 mm (1/4 inch) deep.

Information provided by Chesterton

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Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 50
Tensile Strength at Break 360 psi
Elongation at Yield 180 %
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 2.00e+15 ohm-cm
Dielectric Constant 4.0
@Frequency 1000 Hz
Dielectric Strength 500 V/mil
Dissipation Factor 0.027
@Frequency 1000 Hz
 
Thermal PropertiesOriginal ValueComments
Maximum Service Temperature, Air 260 °Ccontinuous
 320 °Cintermittent
Minimum Service Temperature, Air -51.0 °Ccontinuous
Shrinkage 0.40 - 0.60 %Linear
 
Processing PropertiesOriginal ValueComments
Cure Time 24.0 hour
@Temperature 25.0 °C
Full Cure
Gel Time 180 - 240 min
@Temperature 25.0 °C
 
Compliance PropertiesOriginal ValueComments
FDA YesSee notes for details.
 
Descriptive Properties
Chemical ResistanceAcetoneResistant
 BenzeneFair
 Ethyl AloholResistant
 GasolinePoor
 Hydrochloric Acid, 36%Resistant
 Mineral OilResistant
 Mineral Oil @ 121°C (250°F)Fair
 Nitric Acid, 10%Resistant
 Nitric Acid, 70%Fair
 PerchloroethyleneResistant
 Phosphoric Acid, 30%Resistant
 Potassium Hydroxide-ConcentratedFair, 149°C (300°F)
 Sodium Hydroxide, 15%Resistant
 Steam to 7 kg/cm2 (100 psi)Resistant, 170°C (338°F)
 Sulfuric Acid, 10%Resistant
 Sulfuric Acid, 95%Poor
 TolueneFair
 XyleneFair
Coverage3289 linear cmper 400 gm, 3 mm bead
 822 linear cmper 400 gm, 6 mm bead
Hydraulic Pressure<3000 psi
Steam Pressure100 psi@ 170°C (388°F)

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PPTCHS101 / 138213

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