Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- CAS No.
- 68909-20-6
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Product Highlights
- Two-part, translucent fluorosilicone elastomer
- Cures with heat via addition-cure chemistry
- 50 mol% fluorosilicone
- 1:1 Mix Ratio (Part A: Part B)
Applications & Uses
- Applications
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
- Applications
- For the injection molding of parts requiring a material with a medium durometer including: molded rubber stoppers, gaskets, seals, valves, o-rings and other precision parts
- Suitable for over-molding applications
- For applications requiring resistance to solvents, oils and dimethyl silicone fluids
- Instructions for Use
Mixing
Combine Part A and Part B in a 1:1 mix ratio prior to use. Airless mixing, metering or dispensing equipment is recommended for production operations. If mixing by hand, take care to minimize air entrapment.
Vacuum Deaeration
Remove air entrapped during mixing by common vacuum deaeration procedure, observing all applicable safety precautions. Slowly apply full vacuum to a suitable container of at least four times the volume of material being de-aired. Hold vacuum until bulk deaeration is complete.
Substrate Considerations
Cures in contact with most materials common to biomedical assemblies, exceptions include: sulfur-cured organic rubbers, latex, chlorinated rubbers, some RTV silicones and unreacted residues of some curing agents.
Vulcanization
Curing of the blended elastomer is accelerated by heat. The pre-measured catalyst provides a fixed cure rate. Do not attempt to change molding times by mixing the two components in any other than a 1:1 ratio, as this will affect the properties of the elastomer. Only temperature adjustments should be employed to alter the rate of cure.
Properties
- Appearance
- Translucent
- Typical Properties
- Cured Properties
| Value | Units | Test Method / Conditions | |
| Durometer Type A | 31.0 | — | — |
| Tensile | 650 (4.48 ) | psi (MPa) | — |
| Elongat ion | 350.0 | % | — |
| Tear | 36 (6.35 ) | ppi (kN/m) | — |
| Extrusion Rat e | 115.0 | g/minute | — |
| Mix Rat io | 0.042361111 | — | — |
| Special Feat ure | Specialty Liquid Silicone Rubbers | — | — |
| Specific Gravity | 1.25 | g/cc | — |
| Stress at Strain 200 % | 300 (2.07) | psi (MPa) | — |
| Work Time | 16.0 | hours | — |
| Value | Units | Test Method / Conditions | |
| Cure at 150 °C | 30.0 | minutes | — |
| Cure Rat e Scorch | 1.35 | minutes | — |
| Cure Rat e T90 | 2.85 | minutes | — |
| Cure System | Platinum | — | — |
Packaging & Availability
- Country Availability
- Regional Availability