Published - 1st May 2023
ISO 3302-1:2014 is a standard that sets out guidelines for dimensional tolerances for rubber products. This standard is the first in a series of standards for rubber tolerances and is intended to provide a consistent approach to the measurement and acceptance of rubber products. The standard covers a wide range of rubber products, including seals, gaskets, hoses, and other items that are commonly used in industrial, automotive, and other applications.
The standard is based on the principle that rubber is a flexible material that can be affected by temperature, humidity, and other environmental factors. As a result, it is important to have clear and consistent guidelines for measuring and accepting rubber products in order to ensure that they will function properly in their intended application. The standard provides detailed instructions for measuring and inspecting rubber products, including guidelines for measuring dimensions, testing for defects, and determining acceptance criteria.
ISO 3302-1:2014 is an essential standard for manufacturers and suppliers of rubber products, as well as for those who purchase and use rubber products. It provides a common language for discussing and understanding the properties of rubber products, and ensures that products meet the necessary quality standards. By adhering to this standard, manufacturers and suppliers can ensure that their products are consistent and meet the requirements of their customers, and users of rubber products can be confident that the products they purchase will perform as expected.
| Nominal Dimensions | Class M1 | Class M2 | Class M3 | Class M4 | ||||
|---|---|---|---|---|---|---|---|---|
| Above | Up to and including | F± | C± | F± | C± | F± | C± | F & C± |
| 0 | 4 | 0.08 | 0.1 | 0.1 | 0.15 | 0.25 | 0.4 | 0.5 |
| 4 | 6.3 | 0.1 | 0.12 | 0.15 | 0.2 | |||
| 6.3 | 10 | 0.1 | 0.15 | 0.2 | 0.2 | 0.3 | 0.5 | 0.7 |
| 10 | 16 | 0.15 | 0.2 | 0.2 | 0.25 | 0.4 | 0.6 | 0.8 |
| 16 | 25 | 0.2 | 0.2 | 0.25 | 0.35 | 0.5 | 0.8 | 1 |
| 25 | 40 | 0.2 | 0.25 | 0.35 | 0.4 | 0.6 | 1 | 1.3 |
| 40 | 63 | 0.25 | 0.35 | 0.4 | 0.5 | 0.8 | 1.3 | 1.6 |
| 63 | 100 | 0.35 | 0.4 | 0.5 | 0.7 | 1 | 1.6 | 2 |
| 100 | 160 | 0.4 | 0.5 | 0.7 | 0.8 | 1.3 | 2 | 2.5 |
| 160 | ¥ | 0.30% | 0.40% | 0.50% | 0.70% | 0.80% | 1.30% | 1.50% |
Linear Dimension (BS ISO 3302-1)
F = Fixed dimensions
C = Closed dimensions
All values in millimetres unless otherwise stated
