BS 4249:1989

Foreword
Cooperating organizations
Specification
1 Scope
2 Definitions
3 Types and composition
4 Thicknesses
5 Mechanical properties
6 Physical properties
7 Surface finish
8 Sampling
9 Testing
10 Retesting
11 Marking
Appendices
A Information to be supplied by the purchaser
B Method for measurement of thickness
C Method of test for flexibility
D Method for determination of tensile strength
E Method for determination of dimensional stability
F Method for determination of compressibility and
    compression set
G Method for determination of oil absorption
H Method of test for freedom from corrosive impurities
J Method for determination of resistance to mould
    growth
Tables
1 Nominal thickness and tolerance of type 1 jointing
2 Nominal thickness and tolerance of type 2 jointing
Figures
1 Dimensions of specimen for determination of tensile
    strength
2 Dimensional stability apparatus
3 Typical apparatus for oil absorption test

Composition, thickness, mechanical and physical properties. Suitable for sealing mating faces of components but not suitable for use with potable water.

This British Standard specifies requirements for the materials and manufacture, thickness and mechanical and physical properties of a paper based type of jointing and for a cork and paper based type of jointing.

Appendix A gives information to be supplied by the purchaser.

NOTE 1 Type 1 and type 2 jointings are not suitable for use with potable water.

NOTE 2 The titles of the publications referred to in this standard are listed on the inside back cover.