Molded rubber
Products
Molded rubber
We supply molded rubber in most rubber materials from reputable manufacturers in Europe and Asia. Contact us and we will help you with the choice of material, design and production method.
Materials
The need for technical rubber exists in most industries. Among other things in the construction industry, in the offshore and maritime sector, in the transport industry, aerospace, railways etc.
Otto Olsen delivers high quality technical rubber products to you and your business.
Some examples of different qualities include:
- EPDM: EPDM has excellent ozone and UV resistance in temperatures from -40 ° C to 100 ° C. The material is very suitable for applications that are to be left out. However, it is vulnerable to oils, aromatic hydrocarbons and petroleum products
- Neoprene: Neoprene is an excellent elastomer for general use. It can withstand standing outside in addition to being resistant to some oils. The main disadvantage is the lack of resistance to many industrial chemicals, including strong acids, esters, ketones and hydrocarbons.
- Nitrile: Nitrile shows good resistance to grease, oil, fuel and solvents. However, it has poor resistance to chlorinated hydrocarbons and ketones.
- Silicone: When treated, silicone achieves high levels of purity, so it can be used in sensitive applications, such as food processing, medical and pharmaceutical industries. It has excellent durability - including resistance to ozone and UV radiation - but is vulnerable to grease, oil, fuel, solvents and wear.
- Viton: Viton is ideal for use in applications involving high temperatures (up to 200 ° C) and chemical exposure. Its primary limitations are a narrow hardness range and the potential for damage from ketones, nitro-containing compounds and some esters and alcohols.
| Parameter | TestMethod | Specification |
|---|---|---|
| Modulus @ Elongation (kgcm-2) | ISO 37 | 53.0 5.0 ± |
| Tensile Strength (kgcm-2) | ISO 37 | min. two |
| Elongation @ Break (%) | ISO 37 | min. two |
| Compression Set (%) | ISO 815 (22 hrs @ 70 ° C) | max. 25.0 |
| Tear Strength (Nmm-1) | ISO 34-1 | min. two |
| Hardness (IRHD) | ISO 48 | 70.0 5.0 ± |
| Density (gcm-3) | ISO 2781 | 1.17 0.2 ± |
Production methods
Compression molding is dependent on compressive force and heat to form uncured rubber in the desired shape and size. The process involves inserting unvulcanized rubber material into the mold. Inside the mold, the material is heated and hardened, which makes it possible to maintain the mold even when it is removed from the mold.
Compared to other casting methods, compression molding has a number of advantages. For example, the lowest tool cost, fastest lead time, easiest input for prototyping. However, it is limited in the precision and complexity that can be achieved.
Injection molding uses high pressure and heat to force rubber into a mold. The material in this operation is heated until it reaches a plastic state and then injected under high pressure into the mold. Inside the mold, the material is exposed to high heat and pressure, which initiates the vulcanization process.
This process provides good precision, consistency, design complexity and efficiency. However, these benefits come with a higher price tag. Since the mold costs are high, the process is better suited for high volume parts.