Description
Topda FS-R8500 is translucent uncatalyzed fluorosilicone rubber base mixed evenly with some kinds of fillers and additives. It has high rebound resilience than normal fluorosilicone rubber compound.
Features
- High rebound resilience
- Integrated advantages of both silicone rubber and fluororubber
- Good mechanical properties
- Wide working temperature range(-60°C-200°C)
- Good resistance to solvent & fuel oil
- High tensile force retention at high temperature which is like silicone rubber
- High selective permeability
- Meet requirements of environment protection
Technical Index
| Items | Testing Method | FS-R8530 | FS-R8540 | FS-R8560 | FS-R8570 |
| Appearance | Visual Inspection | Translucent, smooth surface, no visible impurities | |||
| Specific Gravity(g/cm3, 25℃) | ASTM D792 | 1.38 |
1.40 | 1.46 | 1.47 |
| Hardness(Shore A) | ASTM D2240 | 30 | 40 | 60 | 70 |
| Tensile Strength(MPa) Die C | ASTM D412 | 8.0 | 8.2 | 8.5 | 8.2 |
| Elongation at Break(%) Die C | ASTM D412 | 550 | 400 | 350 | 300 |
| Tear Strength(KN/m) Die B | ASTM D624 | 15 | 14 |
16 | 15 |
| Compression Set (177℃X22hr) (25%) B type | ASTM D395 | 9 | 10 | 10 | 11 |
| Vertical Rebound Resilience(%) | ASTM D2632 | 33 |
40 | 38 | 37 |
| Volume Change(reference fuel B)(%)(23℃x70hr) | ASTM D471 | 25 | 24 |
22 | 21 |
How to use
Properties obtained using 0.6-0.8 phr 2,5-bis (tert-butylperoxy)-2,5-dimethyl hexane (DHBP). Molded 15min at 170℃, post-cured 4hr at 200℃. If other cure temperature needed, vulcanization system shall be changed.
Application
Used as sealing materials to resist petroleum oil, lubricant oil, hydraulic oil, transformer oil, and non-polar chemical reagents in low temperature and/or high temperature environments.
Used to produce molded, extruded, and calendered fluorosilicone parts, such as O-rings, gaskets, sealing rings, oil seals, sealing strips, sensor materials, diaphragms, membranes, and clips for fluorosilicone gaskets and pipes.
Packing
It is available in 12.5 Kg per plastic bag and 2 bags in 1 carton.
Transportation & Storage
Transported as non-dangerous substance.
Keep it in good condition of packing during transportation.
The product should be stored in a dry and ventilate place at room temperature.
Avoid from acid, alkali chemical materials and other impurities.
Shelf life
Shelf life: 1 year.
