Rubber for sealing and flexible parts
For a rubber part, hardness and required compression matter alongside dimensions. Silicone rubber is listed separately from coated fabrics. If replacing a seal, specify the original part thickness, shape, contacting medium and operating temperature. The silicone designation alone does not confirm compatibility with every environment.
Specific product 318: white 3 mm rubber
The product table specifies a 1 200 × 1 000 mm format, 3 mm thickness, white colour, hardness of 60 ShA and temperature resistance up to +230 °C. These values belong to this product. The range also includes other thicknesses; check their own specification tables and available formats. The +230 °C figure is not a shared limit for all silicone products.
What to confirm for the finished part
Send a drawing with holes and tolerances, quantity and required hardness. For food contact, request a declaration for the specific supplied material. For chemical exposure, specify the medium and concentration. Cutting or shaped part production must be agreed; merely selecting a sheet size does not confirm delivery of a finished seal.
Benefits and selection
- Flexibility under compression and bending
- Thickness selection according to part function
- Enquiries for cut pieces or shaped parts
Technical specifications to check
Specific values vary by product and variant. When choosing, compare:
- thickness and hardness
- colour and material version
- medium contact and working temperature
- required dimensions and tolerances
Applications
Rubber is used to make sealing, protective and separating elements. Suitability of a specific type must be checked against the environment.
Dimensions and delivery
When choosing, specify thickness, length, width and any required shape. Available format size may vary by product.
Frequently asked questions
How do I choose the right hardness?
According to required compression, pressure and part movement; if you lack these details, describe the application.
Is all silicone rubber suitable for food contact?
No. Such use requires checking the declaration of the specific product.
Product documentation
Specifications according to Mateos, verified on 1 October 2026. Confirm the specific variant and availability when ordering.
