Styrene Butadiene Rubber SBR O Rings
General Characteristics of Styrene Butadiene Rubber (SBR) O-Rings
SBR, also known as Buna S or GRS (Government Rubber Styrene), is a synthetic rubber developed in the 1930s and 1940s as an alternative to natural rubber. It is composed of butadiene and styrene, with approximately 23.5% styrene content. About one-third of global SBR production is used in tire manufacturing. SBR is commonly used in seals for non-mineral oil-based brake fluid applications due to its good resistance to water, alcohol, glycol, and certain ketones.
Temperature Properties of Styrene Butadiene Rubber (SBR) O-Rings
Heat Resistance: Up to about 225°F (107°C).
Cold Flexibility: Down to approximately -70°F (-57°C).
Chemical Compatibility of Styrene Butadiene Rubber (SBR) O-Rings
Compatible Materials:
- Water
- Alcohol
- Glycol
- Certain ketones (e.g., acetone)
- Non-mineral oil-based brake fluids
- Silicone oils and greases
- Diluted water solutions and weak acids
Not Compatible:
- Mineral oils
- Petroleum-based greases and fuels
- Aliphatic hydrocarbons (e.g., benzene, xylene)
- Chlorinated hydrocarbons (e.g., chloroform, trichloroethylene, carbon tetrachloride)
- Oxidizing media (e.g., nitric acid, chromic acid, hydrogen peroxide, chlorine, bromine)
| Material | Very Good | Good | Fair | Poor |
| Chemical Resistance | Good | Â | Â | Â |
| Acetone | Â | Â | Â | 4 |
| Air | Â | Â | 3 | Â |
| Alcohols | Â | 2 | Â | Â |
| Brake Fluids, Non-Petroleum Based | Â | Â | 3 | Â |
| Diester Oils | Â | Â | Â | 4 |
| Glycols | 1 | Â | Â | Â |
| Ketones | Â | Â | 3 | Â |
| Mineral Oil | Â | Â | Â | 4 |
| Oxidation | Â | 2 | Â | Â |
| Petroleum Oils (Below 250ºF) |  |  |  | 4 |
| Silicone Fluids | 1 | Â | Â | Â |
| Steam to 500ºF |  |  |  | 4 |
| Transmission Fluids (Type A) | Â | Â | Â | 4 |
With many years of experience in production and application across various industries, Walle has developed a wide range of materials suitable for different sealing environments. Our goal is to enhance customer value and reduce costs through high-quality products and efficient solutions. Our advanced automated production equipment and testing systems ensure the consistent quality of our SBR O-rings.
We offer the highest quality at the most competitive prices, ensuring timely delivery for all your SBR O-ring needs. If you have any questions, please feel free to contact us. We are always happy to assist you!
Tower Crane spare parts refer to the components and accessories that are used to replace damaged or worn-out parts of a tower crane. Some common tower crane spare parts include:
1. Hoist motors: These are used to lift and lower heavy loads in a tower crane.
2. Slewing motors: These motors are responsible for rotating the tower crane.
3. Wire ropes: Wire ropes are used for lifting and lowering loads in a tower crane.
4. Safety devices: These include limit switches, load moment indicators, and anti-collision systems, which ensure safe operation of the tower crane.
5. Control panels: These panels include buttons, switches, and control systems that allow operators to control the movements of the tower crane.
6. Hydraulic pumps and cylinders: These components are used to control the movement of the tower crane's jib and trolley.
7. Electrical components: These include circuit breakers, contactors, relays, and fuses, which are essential for the electrical functioning of the tower crane.
8. Bearings: Bearings are used to reduce friction and facilitate smooth movement of various parts in the tower crane.
9. Brakes: Tower cranes are equipped with various types of brakes, including hoist brakes, slewing brakes, and trolley brakes, which help in controlling the movement of the crane.
10. Ladders and platforms: These are used for accessing different parts of the tower crane for maintenance and repair purposes.
Tower crane spare parts are essential for ensuring the smooth operation and maintenance of tower cranes, as they help in replacing worn-out or damaged components and ensuring the safety and efficiency of the crane.
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