UNI EN 682 : 2006

Foreword
1 Scope
2 Normative references
3 Classification
4 Requirements
   4.1 Materials
   4.2 Finished seal requirements
        4.2.1 Dimensional tolerances
        4.2.2 Imperfections and defects
        4.2.3 Hardness
        4.2.4 Tensile strength and elongation at break
        4.2.5 Compression set in air
        4.2.6 Accelerated ageing in air
        4.2.7 Stress relaxation in compression
        4.2.8 Volume change in liquid B
        4.2.9 Volume change in oil
        4.2.10 Ozone resistance
        4.2.11 Compression set at -15 degree C
5 Test pieces and temperature
   5.1 Preparation of test pieces
   5.2 Test temperature
6 Factory production control
7 Factory product control tests
   7.1 Sampling
   7.2 Routine tests
   7.3 Type tests
8 Storage
9 Designation
10 Marking and labelling
Annex A (informative) Guidance on storage of seals
Annex ZA (informative) Clauses of this European Standard
         addressing the provisions of the EU Construction
         Products Directive
Bibliography

Specifies requirements for elastomeric materials used in seals for supply pipes and fittings, ancillaries and valves at operating temperatures in general from -5 degree C up to 50 degree C and in special cases from -15 degree C up to 50 degree C, for the following: - gaseous fuel (manufactured, natural and liquefied petroleum gas [LPG] in gaseous phase); - hydrocarbon fluids with aromatic content up to 30 % (V/V), including LPG in liquid phase.