Dow Silastic 9280/75E

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Description for Dow Silastic 9280/75E

Good clarity; easily pigmented; formulated to meet BgVV, XV and FDA regulations.

Brand	Silastic
Application Type	Mold-Making
1 Part or 2 Part	2-Part
Material Form	Liquid
Manufacturer	Dow
Chemistry	Silicone rubber
Cure Method	Part A/Part B
Cure Temperature (°C)	120, 200, 200
Cure Time (min)	10, 240, 0.13 to 0.23
Viscosity (cPs)	520 (Pa.s)
Volume Resistivity (O)	4.8e15 (ohms/cm)
Key Specifications	FDA (U.S. Food & Drug Administration) and/or CFIA (Canadian Food Inspection Agency): FDA 21 CFR 177.2600

Best Practices for Dow Silastic 9280/75E

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Technical Data for Dow Silastic 9280/75E

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Overview

Application Type
- Casting / Moldmaking - Mold-Making
1 Part or 2 Part
- 2-Part
Material Form
- Liquid
Chemistry
- Silicone - Silicone rubber
Application Method
- Dispenser - Meter mix equipment
Cure Method
- 2-Part Cure - Part A/Part B
Key Specifications
- FDA (U.S. Food & Drug Administration) and/or CFIA (Canadian Food Inspection Agency) : 177.2600 - FDA 21 CFR 177.2600
Brand
- Silastic

Specifications

Cure Specs

Cure Temperature (°C)	120, 200, 200	Test Method
Cure Time (min)	10, 240, 0.13 to 0.23	Test Method
Viscosity (cPs)	520 (Pa.s)	Test Method
Work / Pot Time (min)	4,320	Test Method
Mix Ratio	1:1 (by volume)

Bond Strength

Tear Strength (piw)	20 (kN/m), 10 (kN/m)	Test Method
Tensile Strength (psi)	9.0 (Mpa), 9.0 (Mpa)	Test Method

Conductivity

Volume Resistivity (O)	4.8e15 (ohms/cm)	Test Method

Hardness

Shore A Hardness	74, 77	Test Method
Elongation (%)	400, 380	Test Method

Other Properties

Specific Gravity	1.160	Test Method
Flash Point (°F)	212.0
% Solids (%)	100

Business Information

Shelf Life Details	When stored at or below 32°C (90°F) in original unopened containers, this product has a usable life of 15 months from the date of production.
Shelf Life Type	from the date of production
Shelf Life (mon)	15

Best Practices for Dow Silastic 9280/75E

*See Terms of Use Below
1. Mixing
  
  The A & B components are supplied strained and de-aired to be used as lot matched kits.
  
  Mix Parts A & B in a 1:1 ratio. Meter Mix equipment which pumps, meters and mixes the two components without the incorporation of air is strongly recommended for production.
2. Deairing/Degassing
  
  If air bubbles are entrapped during mixing the moisture must be thoroughly degassed under vacuum.
3. Curing
  
  SILASTIC 9280/75E cures rapidly at elevated temperatures. A 2mm cross-section requires 8-14 seconds at 200°C (392°F). The cure time depends on the thickness and the cure temperature used. Cure can be inhibited by contact with certain materials such as amines, sulphur and tin complexes.
4. Clean-Up
  
  The uncured silicone can readily be removed by most hydrocarbon solvents. Polar solvents, such as ketones and alcohols, are not suitable.
Comparable Materials for Dow Silastic 9280/75E

*See Terms of Use Below

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