ASTM F147-87(1997)

Standard Test Method for Flexibility of Non-Metallic Gasket Materials

SCOPE
1.1 This test method covers the determination of the flexibility of non-metallic gasket materials. It is designed for testing specimens cut from sheet goods or from the gasket in the finished form, as supplied for commercial use. Materials normally classified as rubber compounds are excluded since they are covered in Classification D 2000.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Sep-1997
• ICS: 21.140 - Seals, glands
• Technical Committee: F03 - Gaskets
• Drafting Committee: F03.20 - Mechanical Test Methods

Relations

• Replaced By: ASTM F147-87(2003) - Standard Test Method for Flexibility of Non-Metallic Gasket Materials
• Effective Date: 01-Oct-2003
• Referred By: ASTM F146-12(2019)e1 - Standard Test Methods for Fluid Resistance of Gasket Materials
• Effective Date: 10-Sep-1997
• Referred By: ASTM F104-11(2020) - Standard Classification System for Nonmetallic Gasket Materials
• Effective Date: 10-Sep-1997

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: F 147 – 87 (Reapproved 1997)
Standard Test Method for
Flexibility of Non-Metallic Gasket Materials
This standard is issued under the fixed designation F 147; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 5. Apparatus
1.1 This test method covers the determination of the flex- 5.1 Steel Die, 12.7 by 154.4 mm (0.5 by 6 in.).
ibility of non-metallic gasket materials. It is designed for 5.2 Circulating-Hot-Air Oven, maintained at 100 6 1°C
testing specimens cut from sheet goods or from the gasket in (212 6 2°F).
the finished form, as supplied for commercial use. Materials 5.3 Cold Box, capable of maintaining − 40 6 1°C (−40 6
normally classified as rubber compounds are excluded since 2°F).
they are covered in Classification D 2000. 5.4 Mandrels, a series with diameters ranging from 4.8 to
1.2 The values stated in SI units are to be regarded as the 101.6 mm ( ⁄16 to 4 in.).
standard. The values given in parentheses are for information
6. Test Specimens
only.
6.1 The specimens shall be cleanly die-cut to provide sharp
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the edges, free of tears, nicks, or abraded particles. The minimum
thickness for asbestos (Type 1) and synthetic (Type 7) fiber
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- containing materials shall be 0.4 mm (0.016 in.) and a
maximum thickness of 6.3 mm (0.250 in.). The minimum
bility of regulatory limitations prior to use.
thickness for cork (Type 2) composition shall be 3.2 mm (0.125
2. Referenced Documents
in.) and 1.6 mm (0.062 in.) for cork-rubber materials, with a
2.1 ASTM Standards: maximum thickness of 4.8 mm (0.186 in.). The minimum
D 2000 Classification System for Rubber Products in Auto- thickness for cellulose (Type 3) gasket materials shall be 0.127
motive Applications mm (0.005 in.) and the maximum thickness shall be 1.6 mm
F 104 Classification System for Nonmetallic Gasket Mate- (0.062 in.). The minimum thickness for flexible graphite (Type
rials 5) shall be 0.127 mm (0.005 in.) and a maximum of 0.8 mm
F 146 Test Methods for Fluid Resistance of Gasket Materi- (0.031 in.).
als
7. Conditioning
3. Summary of Test Method
7.1 Condition specimens in accordance with Classification
3.1 A specimen of the material is bent 180° around a System F104.
mandrel of appropriate size relative to its thickness. Materials
8. Temperature of Test
will be tested both with and across grain on material with grain
8.1 Tests will be conducted on specimens that are at a
orientation. An elevated-temperature exposure conditioning is
used to simulate shelf life. A low-temperature exposure condi- temperature of 21 to 29°C (70 to 85°F) except for the
low-temperature tests, where the specimen will be − 40 6 1°C
tioning is used to simulate handling at low-temperature envi-
ronments. Tests may also be conducted after immersion in (−40 6 2°F).
various fluids in accordance with Test Method F 146.
9. Procedure
4. Significance and Use
9.1 Firmly hold the specimen at one point on a circular
mandrel and force slowly but firmly under finger pressure to
4.1 This test method is designed to measure the ability of
non-metallic gasket materials to withstand handling, as would contact 180° of the full diameter. Repeat this flexure using
decreasing mandrel diameters on a new length of specimen
be encountere
...