BS EN 12365-3:2003 – Building hardware — Gasket and weatherstripping for doors, windows, shutters and curtain walling — Part 3: Deflection recovery test method
1 Scope
This standard specifies the method to be used to select, prepare, condition and test samples of gaskets or weatherstripping, to determine the percentage of recovery after being compressed or deflected through their working range to the minimum width under the conditions laid down in the test.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of this publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments).
EN 12365-1:2003, Building hardware — Gaskets and weatherstripping for doors, windows, shutters and curtain walling — Part 1: Performace requirements and classification
prEN 12519:2003, Windows and doors – Terminology
ISO 188, Rubber, vulcanized or thermoplastic —– Accelerated ageing and heat resistance tests 3 Terms and definitions
For the purposes of this European Standard the terms and definitions given in EN 12365-1:2003 and prEN 12519:2003 apply.
4 Requirements
4.1 Working temperature range
Six grades of working temperature range are identified:
grade 1: 0 ° C to +45 ° C;
grade 2: -10 ° C to +55 ° C;
grade 3: -20 ° C to +85 ° C;
grade 4: -25 ° C to +100 ° C;
grade 5: -40 ° C to +70 ° C;
grade 6: 0 ° C to +200 ° C.
4.2 Deflection recovery
Eight grades of deflection recovery are identified:
grade 0: no performance requirement;
grade 1: > 30 % to 40 %;
grade 2: > 40 % to 50 %;
grade 3: > 50 % to 60 %;
grade 4: > 60 % to 70 %;
grade 5: > 70 % to 80 %;
grade 6: > 80 % to 90 %;
grade 7: > 90 %.
5 Test apparatus
5.1 General
A typical compression block is shown in annex A. The compression block shall consist of a support for the gasket or weatherstripping such that one or more test pieces can be mounted separately or together in a manner that will allow them to be compressed or deflected to their minimum working width.
5.2 Heating chamber
An electrically heated oven which complies with the requirements of ISO 188, method A is required for the test. It shall be capable of being set and maintained at the maximum working temperature of any materials to be tested.
BS EN 12365-3:2003 – Building hardware — Gasket and weatherstripping for doors, windows, shutters and curtain walling — Part 3: Deflection recovery test method