Committees responsible for this British Standard

The preparation of this British Standard was entrusted to PRI/54, Rubber compounds, upon which the following bodies were represented:

British Rubber Manufacturers Association Ltd.
Chemical Industries Association
Ministry of Defence RAPRA Technology Ltd.
Tun Abdul Razak Research Centre

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 18 June 2003

The following BSI references relate to the work on this British Standard:

Committee reference PRI/54 Draft for comment 02/122016 DC

Foreword

This British Standard has been prepared under the direction of PRI/54, Rubber compounds. It supersedes BS 2752:1990 which is withdrawn.

One technical change has been made, namely the inclusion of the larger type 1 dumbbell of BS 903‑A2 as an alternative to the type 2 dumbbell for the measurement of tensile strength and elongation at break (Table 2). This edition otherwise comprises an editorial revision of the 1990 standard, in which the presentation has been changed to align the text with other British Standards in the group.

It is emphasized that this British Standard covers chloroprene rubber compounds for general purpose applications and does not require the special compounding which is necessary to achieve improvement in any one specific property.

Other British Standards in this group for rubber compounds are as follows:

BS 1154, Specification for natural rubber compounds.
BS 1155, Specification for natural rubber compounds for extrusion.
BS 2751, Specification for general purpose acrylonitrile-butadiene rubber compounds.
BS 3227, Specification for butyl rubber compounds (including halobutyl compounds).
BS 6014, Specification for ethylene propylene rubber compounds.
BS 6996, Specification for mineral oil resistant acrylonitrile-butadiene rubber compounds.

The following British Standards are also relevant to this standard.

BS 3558, Glossary of rubber terms.
BS 3734‑1, Rubber — Tolerances for products — Part 1: Dimensional tolerances.

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Compliance with a British Standard does not of itself confer immunity from legal obligations.

1 Scope

This British Standard specifies compositional and physical property requirements for five chloroprene rubber compounds of hardness range 40 IRHD to 80 IRHD, designated C40, C50, C60, C70 and C80.

These compounds are intended for the manufacture of items in the form of extrusions, mouldings, moulded or calendered sheet and for items cut or punched from sheet.

NOTE 1 The compounds do not necessarily have good electrical insulating properties.

NOTE 2 The chloroprene rubber compounds specified in this standard are not required to be compounded to be resistant to ozone attack and their resistance to ozone is not tested.

Potential users should seek technical advice if they are unsure as to whether ozone resistance is required for their application. The inherent level of resistance in chloroprene rubber may not be sufficient.

2 Normative references

3 Classification

4 Composition

5 Preparation of test sheet

6 Physical properties of the vulcanized test sheet

7 Marking

Bibliography

BS 2752:2003

Chloroprene rubber compounds. Specification

Current

Published:

18 Jun 2003