RO
SR EN 549:1999
Rubber materials for seals and diaphragms for appliances and gas equipment
This standard specifies requirements and associated test methods for vulcanized rubber materials used in gas appliances and equipment in contact with 1st, 2nd and 3rd family combustible gases. It also establishes a classification based on temperature range and hardness. This standard is applicable to materials from which are manufactured homogeneous seals and homogeneous or reinforced diaphragms. The normal range of operating temperatures covered by this standard is 0 oC to + 60 oC. Tests are also included for applications using diaphragms within the range - 20 oC to + 80 oC and seals within the range - 20 oC to + 150 oC. For temperatures outside these ranges the user should contact the manufacturer regarding the suitability of the rubber material. This standard includes two normative annexes for the verification that a component (finished product) was produced from a previously type tested material complying with requirements of this standard as declared by the appliance or equipment manufacturer or supplier of the component. This standard is not applicable to silicone rub
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Status :
Withdrawn
Approval date : 3/30/1999
Publish date : 3/31/1999
Withdrawal date : 11/29/2019
Number of pages : 22
ICS : 83.140.50 Seals
Technical Committee : 108 - Plastics, codification and analysis methods
- Replaces SR EN 278:1996
- Replaces SR EN 279:1996
- Normative reference SR ISO 471:1997
- Normative reference SR ISO 247:1995
- Normative reference SR ISO 48:1996
- Normative reference SR ISO 4648:1997
- Normative reference SR ISO 37:1997
- Normative reference SR ISO 1817:1993
- Normative reference SR ISO 815+A1:1995
- Replaced by SR EN 549:2019