IS 4253 : Part 2 : 2008 Cork Composition Sheets - Specification - Part 2 : Cork and Rubber

ICS 674.833:621-762.4 MED 30
Reaffirmed 2014

1 Scope

1.1 This standard (Part 2) specifies requirements for cork composition sheets for gaskets made by the compounding of granular cork with natural or synthetic rubber.

1.2 Three types of sheets are covered, and within each type, three grades. Type A is non-oil resistant, Type B has a good resistance to oil, and Type C has a very good resistance to oils and petrol.

2 References

The following standards contain provisions, whichthrough reference in this text, constitute provisionsof this standard. At the time of publication theeditions Indicated were valid. All standards aresubject to revision and parties to agreements basedon this standard are encouraged to investigate thepossibility of applying the most recent editions ofthe standards indicated below:

   IS No.    Title
IS 335 : 1993 New insulating oils (fourth
revision)
IS 460 Specification of test sieves:
IS Part 1 : 1985 Wire cloth test sieves (third
revision)
IS Part 2 : 1985 Perforated plate test sieves (third
revision)
IS 2500
Part 1 : 2000
Sampling inspection procedures:
Part 1 Attribute sampling plans
indexed by acceptable quality
level (AQL) for lot-by-lot
inspection (third revision)
IS 2967 : 1983 Specification for external
micrometer (first revision)
IS 3400 Methods of test for vulcanized
rubber:
IS Part 2 : 2003 Rubber, vulcanized or thermoplastic
- Determination of Hardness (Hardness
between 10 IRHD and
100 IRHD) (third revision)
IS Part 10 : 1977 Compression set at constant
strain (first revision)
IS 4202 : 1967 Method for determination of
chloride content of textile
materials
IS 4203 : 1967 Method for determination of
sulphate content in textile
materials