ASTM F434-93(1997)

Standard Test Method for Blow-Out Testing of Preformed Gaskets

SCOPE
1.1 This test method covers the determination of the resistance against blow-out of preformed gaskets. The test is conducted under ambient conditions and should be used for comparison purposes only to select suitable designs and constructions for specific applications.  
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 problems, 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: 91.100.50 - Binders. Sealing materials
• Technical Committee: F03 - Gaskets
• Drafting Committee: F03.20 - Mechanical Test Methods

Relations

• Replaced By: ASTM F434-93(2003) - Standard Test Method for Blow-Out Testing of Preformed Gaskets
• Effective Date: 01-Oct-2003

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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.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 434 – 93 (Reapproved 1997)
Standard Test Method for
Blow-Out Testing of Preformed Gaskets
This standard is issued under the fixed designation F 434; 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.
1. Scope 4. Test Specimen
1.1 This test method covers the determination of the resis- 4.1 The specimen shall be a 102 mm (4-in.) nominal-size
tance against blow-out of preformed gaskets. The test is gasket 114 mm (4.5 in.) in inside diameter by 165 mm (6.5 in.)
conducted under ambient conditions and should be used for in outside diameter. The thickness of the test gasket will
comparison purposes only to select suitable designs and depend upon its expected usage and must be specified in the
constructions for specific applications. report, as results will vary accordingly.
1.2 The values stated in SI units are to be regarded as the
5. Procedure
standard. The values given in parentheses are for information
only. 5.1 Assemble the specimen in the test unit.
5.2 The bolt threads should be well lubricated using moly-
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the disulfide dry film or grease. Sanding the bottom of the bolt
heads and the washers will reduce torque variable and ensure
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- duplication of results.
5.3 Tighten the bolts, using the sequence shown in Fig. 2,
bility of regulatory limitations prior to use.
increasing the torque loading in 25 % increments to the
2. Significance and Use
targeted torque, but do not exceed the rating on the bolts.
2.1 This test method is designed to compare all types of 5.4 Fill the test unit with water, and bleed out all excess air
preformed gaskets under controlled conditions with respect to by tilting until no further air bubbles are forthcoming.
blow-out resistance. This test method may be used as a routine 5.5 Fill the oil reservoir (thermowell) three-quarters full of
test when agreed upon between the purchaser and the seller. light oil. Allow 15 min for the temperature to stabilize, and
insert the temperature sensor.
3. Apparatus
5.6 Before applying hydrostatic pressure, cover the entire
3.1 Pressure Supply, capable of 7 MPa (1000 psi), prefer-
test receptacle with a metal shield, leaving the gage exposed
ably hydraulic, and with proper safety precautions, in the event for the recording of data.
of a rapid-gasket failure.
5.7 Attach a water hose from the booster pump, and
3.2 Test Unit, capable of withstanding 7 MPa (1000 psi) gradually apply water pressure. This should be done under safe
internal pressure under ambient conditions. Provisions should conditions, as follows:
be made for valve and pressure gage mountings, as shown in
5.7.1 The operator should be wearing suitable safety equip-
Fig. 1. The gage shall read from 0 to 7 MPa (0 to 1000 psi) and ment,
be mounted so as to be visible at some distance.
5.7.2 The control valve should be located at a safe distance
3.3 Booster Pump—An air-operated hydraulic (water) pres- from the test area, and
−5 3 3
sure pump, capable of delivering 1.1 3 10 m /s (40 in. /min)
5.7.3 Quick and violent pressure surges should be avoided.
against a back pressure of 35 MPa (5000 psi). 5.8 Discontinue the application of pressure when 7 MPa
3.4 Temperature Indicating Device—A thermometer ca-
(1000 psi) has been reached.
pable of
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