ASTM F1909-98(2020)

Standard Specification for Preformed Open–Cell Sponge Rubber Pail and Drum Gaskets

ABSTRACT
This specification covers preformed open-cell sponge rubber gaskets, for use in new or reconditioned pails or drums, of the following classes: Class A and Class B, each divided into Grade 1, Grade 2, and Grade 3. Cellular sponge rubber gaskets shall be made by incorporating a blowing agent into the compound, such as sodium bicarbonate, that gives off a gas which expands the mass during the vulcanization process, and shall be manufactured from natural rubber, synthetic rubber, or rubber-like materials, together with added compounding ingredients. Unless otherwise specified, gasket sponge rubber shall have a natural skin on both the top and bottom surfaces. Cellular rubber shall conform to the prescribed requirements as to physical properties such as (1) compression at deflection, (2) change in volume upon oil immersion, (3) change in compression value after heat aging, (4) compression set, and (5) color (tan or black). The following test methods shall be used: (1) compression deflection test, (2) oil immersion test, (3) heat oven aging test, and (4) compression set test under constant deflection. The formula for calculating the compression set is given. The requirements for sampling, test specimens and slabs, and measurements of test specimen such as width and thickness are detailed as well. The location from which standard test specimens are to be cut when testing standard test slabs or commercial flat sheets and the four-cavity frame for standard test slabs of cellular rubbers are illustrated.
SCOPE
1.1 This specification covers preformed open–cell sponge rubber gaskets of the following classes for use in new or reconditioned pails or drums.  
1.1.1 Class A—Non–Oil Resistant.  
1.1.2 Class B—Oil Resistant.  
1.2 The values stated in SI units are to be regarded as the standard.  
1.3 The following safety hazards caveat pertains only to Section 10, General Test Methods. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: ISO Equivalency Statement—This proposed specification was found to be not equivalent.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Dec-2019
• ICS: 83.140.50 - Seals
• Technical Committee: F03 - Gaskets
• Drafting Committee: F03.60 - Specifications for Gasket Materials

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:F1909 −98 (Reapproved 2020)
Standard Specification for
Preformed Open–Cell Sponge Rubber Pail and Drum
1
Gaskets
This standard is issued under the fixed designation F1909; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope D1056 Specification for Flexible Cellular Materials—
Sponge or Expanded Rubber
1.1 This specification covers preformed open–cell sponge
D3182 PracticeforRubber—Materials,Equipment,andPro-
rubber gaskets of the following classes for use in new or
cedures for Mixing Standard Compounds and Preparing
reconditioned pails or drums.
Standard Vulcanized Sheets
1.1.1 Class A—Non–Oil Resistant.
D3183 Practice for Rubber—Preparation of Pieces for Test
1.1.2 Class B—Oil Resistant.
Purposes from Products
1.2 The values stated in SI units are to be regarded as the
standard.
3. Terminology
1.3 The following safety hazards caveat pertains only to
3.1 Definitions of Terms Specific to This Standard:
Section 10, General Test Methods. This standard does not
3.1.1 cellular material—a generic term for materials con-
purport to address all of the safety concerns, if any, associated
taining many open cells dispersed throughout the mass.
with its use. It is the responsibility of the user of this standard
3.1.2 flexible cellular material—a flexible, cellular material
to establish appropriate safety, health, and environmental
that will not rupture within 60 s when a specimen 200 by 25 by
practices and determine the applicability of regulatory limita-
25mm(8by1by1in.)isbentarounda25mm(1in.)diameter
tions prior to use.
mandrelatauniformrateofonelapin5sintheformofahelix
NOTE 1—ISO Equivalency Statement—This proposed specification was
at a temperature between 18 and 29°C (65 and 85°F).
found to be not equivalent.
3.1.3 natural skin—a relatively dense layer at the surface of
1.4 This international standard was developed in accor-
a cellular material. Normally, this natural skin is formed by
dance with internationally recognized principles on standard-
contact with the mold during manufacture. Parts made by
ization established in the Decision on Principles for the
cutting from open–cell (sponge rubber) sheets usually have
Development of International Standards, Guides and Recom-
natural skin on two faces and open cells at the cut edges.
mendations issued by the World Trade Organization Technical
3.1.4 rubber—a material that is capable of recovering from
Barriers to Trade (TBT) Committee.
large deformations quickly and forcibly.
3.1.5 sponge rubber—cellularrubberconsistingofpredomi-
2. Referenced Documents
2 nantly open cells made from a solid rubber compound.
2.1 ASTM Standards:
D395 Test Methods for Rubber Property—Compression Set
4. Classification
D471 Test Method for Rubber Property—Effect of Liquids
4.1 Classes—Cellular rubbers are divided into two classes,
D573 Test Method for Rubber—Deterioration in an Air
which are designated by the letters A and B added to the
Oven
number prefix.
D575 Test Methods for Rubber Properties in Compression
4.1.1 Class A—Cellular rubbers made from natural rubber,
reclaimed rubber, synthetic rubber, or rubber-like materials,
alone or in combination, where specific resistance to the action
1
ThisspecificationisunderthejurisdictionofASTMCommitteeF03onGaskets
of petroleum–base oils is not required.
andisthedirectresponsibilityofSubcommitteeF03.60onSpecificationsforGasket
Materials.
4.1.2 Class B—Cellular rubbers made from synthetic rubber
Current edition approved Jan. 1, 2020. Published January 2020. Originally
or rubber-like materials, alone or in combination, having
approved in 1998. Last previous edition approved in 2012 as F1909 – 98 (2012).
specific requirements for oil resistance.
DOI: 10.1520/F1909-98R20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.2 Grades—Each class is divided into three different
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
grades. Each grade is based on a specific range of firmness as
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. expressed by a 25 % compression. Grades are designated by
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F1909−98 (2020)
TABLE 1 Physical Requirements of Open–Cell Sponge Rubber TABLE 2 Tolerances on Dimensions for Open–Cell Sponge
Pai
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