Description: This series is a premixed compound of silicone rubber with general purpose with good balanced
properties for extrusion process, vulcanizing under heat after addition of a vulcanizing agent that could be chosen
according to processing requirement.
Special properties:
Good balanced mechanical properties for extrusion.
Good appearance.
Easy to process and demold, not sticky to rolls.
Good stability up to 200ºC.
Slight replastification after prolonged storage.
Wild range of reloading or blending.
Bright colors easily obtained
Vacuum-packed
Main applications:
Extrusions such as seals, sheet, tube, etc.
Molded articles, calendered sheet, etc.
Mechanical properties:
Item |
Testing Method |
Unit |
Technical Data |
SR230U |
SR240U |
SR250U |
SR260U |
SR270U |
SR280U |
Appearance |
Visual Observation |
|
Translucent |
Translucent |
Translucent |
Translucent |
Translucent |
Translucent |
Density |
ASTM D792 |
g/cm3 |
1.09 |
1.13 |
1.17 |
1.19 |
1.21 |
1.23 |
Hardness |
ASTM D2240 |
Shore A |
31 |
41 |
50 |
59 |
69 |
79 |
Tensile Strength |
ASTM D412 |
Mpa |
7.1 |
8.1 |
9.0 |
9.2 |
8.6 |
7.7 |
Elongation |
ASTM D412 |
% |
690 |
587 |
390 |
332 |
238 |
186 |
100% Modulus |
ASTM D412 |
Mpa |
0.59 |
0.81 |
1.39 |
1.99 |
3.35 |
3.52 |
Tear Strength |
ASTM D624 Die B |
N/mm |
12 |
14 |
17 |
16 |
18 |
16 |
Rebound |
ASTM D395 Method B |
% |
73.9 |
70.3 |
68.5 |
59.9 |
56.5 |
52 |
Packaging:
20 kg per cardboard boxes.
Storage and shelf life:
This series may be stored in its original unopened packaging at a temperature below 40°C for up to 12 months as
from the date of manufacture.
Q: Are you a factory or trading company?
A: We are rubber raw material manufacturer and owned 3 factories.
Q: Where is the loading port and How do you ship the goods?
A: Our factory is nearby Shanghai Port, but loading port can be negotiated. We could ship by sea, by air or by express(EMS, UPS, DHL, TNT, FEDEX and etc). Please confirm with us before placing orders.
Q: How can we guarantee the products' quality?
A: All the products must be tested refers to key specifications during the production and final inspection before shipment.
Q: What about the lead time?
A: It depends on the order quantity you place the order. Usually sample needs 5-8 working days, mass production needs 15-30 days.