Quality Standards

Quality Standards for EPDM Gaskets used in Building Construction

KASTRADE follows the mentioned International Test Standards which are currently governing the building construction Industry world-wide. These Test Standards govern and control the quality of the Rubber Gaskets required for a specific application in Facade/Building Construction.

BS 4255: Part 1:1986

BS 4255: Part 1:1986

Rubber used in preformed gaskets for weather exclusion from buildings

SCOPE OF THIS STANDARD

This part of BS 4255 specifies requirements for the classification, physical properties and markings of solid (non-cellular) rubber used in preformed gaskets for sealing applications in buildings where resistance to weathering, ozone and permanent deformation under load are of prime importance. This part applies to Chloroprene, Butyl, halobutyl, ethylene propylene (EPDM), chlorosulphonated polyethylene and silicone rubbers used in the gaskets.

ISO5892-1981

ISO5892-1981

Rubber Gaskets - Materials for preformed solid vilcanized structural gaskets -specification

SCOPE OF THIS STANDARD

This International Standard specifies material requirements for preformed Solid Vulcanized Rubber Structural Gaskets used in sealing applications where both resistance to stress relaxation and resistance to weathering are essential. It is related particularly to gaskets of the lock-strip type. However, this standard does not give the material requirements for gaskets used for sealing glazing and panels, which are the subject of ISO 3934.

ASTM C864-05

ASTM C864-05

Standard Specification for Dense Elastomeric Compression Seal Gaskets, Setting Blocks, and Spacers

SCOPE OF THIS STANDARD

This specification covers preformed dense elastomeric compression gaskets and accessories for use in sealing and glazing applications. These materials are generally used to seal or serve as components of compression sealing systems between mechanically restrained surfaces in building constructions.

The elastomeric materials shall be manufactured from a high-quality ozone-resistant compound that, when properly cured, will comply to the requirements specified. The cured compound shall be suitable for use where resistance to sunlight, weathering, oxidation, and permanent deformation under load are of prime importance.

The preformed gaskets or shapes shall be free of porosity, surface defects, and dimensional irregularities that may affect serviceability. The specimens shall be subjected to the following test methods: hardness test, compression set test, ozone resistance test, tensile strength test, elongation test, heat aging test, tear strength test, brittleness temperature test, non-staining test, and flame propagation test.

DIN 7863-1 : 2011-10

DIN 7863-1 : 2011-10

Elastomor glazing and panel gaskets for windows and claddings - Technical delivery conditions - Part 1: Non celluar elastomer glazing and panel gaskets

SCOPE OF THIS STANDARD

This is a German Standard. The material standard DIN 7863-1 specifies requirements for elastomer materials for the manufacture of elastomer gaskets for use in window and fa├žade construction. The standard consists of two parts, whereby Part 1 describes the requirements for non-cellular gaskets and Part 2 specifies the requirements for cellular elastomer gaskets. Part 2 of the standard is currently under preparation. The standard has been prepared by NA 045-02-10-01 AK "Fensterdichtungen" ("Window gaskets").

ASTM C542-90

ASTM C864-05

For Lock - Strip Gaskets

SCOPE OF THIS STANDARD

This specification defines the required properties of lock-strip gaskets where resistance to sunlight, weathering, flame, oxidation, permanent deformation under load, and diminution of gripping pressure are prime essentials.

Gaskets shall be manufactured from an ozone-resistant compound and shall not be dependent for ozone resistance on surface protection which can be removed by abrasion, detergents, or other means.

The tensile strength test and elongation test shall be performed to meet the requirements prescribed.

Tear resistance test, hardness test, compression test, brittleness temperature test, ozone resistance test, heat aging effect test, flame propagation test, and lip pressure test shall be performed to meet the requirements prescribed.

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