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This specification covers rubber rings used as seals for asbestos-cement pipe joints. Material under this specification consists of natural or synthetic rubber rings, or both, for use in applications requiring non-oil resistant rings, and synthetic rubber rings for use in applications requiring oil-resistant rings. The ring shall be manufactured from a properly vulcanized virgin rubber compound, that is, rubber containing no scrap, reclaim, or rubber substitutes, with dimensions that shall conform to the requirements specified. The ring must also possess a surface that is smooth and free of pitting, cracks, blisters, air marks, and other imperfections, and a body free of porosity and air pockets. Tests for tensile strength, elongation, stress at elongation, hardness, compression set, low-temperature flexibility, volume change, and appearance change shall be performed and shall conform to the requirements specified.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers rubber rings used to seal the joints of asbestos-cement pipe conforming to Specifications , , , and non-asbestos fiber-cement pipe conforming to Specification .
1.2 A specification is given for (1) natural or synthetic rubber rings, or both, where resistance to oil or solvents is not required, and (2) synthetic rubber rings for services involving resistance to oil or solvents.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 Warning—Breathing of asbestos dust is hazardous. Asbestos and asbestos products present demonstrated health risks for users and for those with whom they come into contact. In addition to other precautions, when working with asbestos-cement products, minimize the dust that results. For information on the safe use of chrysotile asbestos, refer to “Safe Use of Chrysotile: A Manual on Preventive and Control Measures.”
1.5 The following safety hazards caveat pertains only to the test methods portion, Section , of this standard: 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C296 Specification for Asbestos-Cement Pressure Pipe
C428 Specification for Asbestos-Cement Nonpressure Sewer Pipe
C644 Specification for Asbestos-Cement Non-Pressure Small Diameter Sewer Pipe; Replaced by C 428
C668 Specification for Asbestos-Cement Transmission Pipe
D395 Test Methods for Rubber Property--Compression Set
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension
D471 Test Method for Rubber Property--Effect of Liquids
D573 Test Method for Rubber--Deterioration in an Air Oven
D865 Test Method for Rubber--Deterioration by Heating in Air (Test Tube Enclosure)
D1415 Test Method for Rubber Property--International Hardness
D2137 Test Methods for Rubber Property--Brittleness Point of Flexible Polymers and Coated Fabrics
D2240 Test Method for Rubber Property--Durometer Hardness
Other DocumentRubber Manufacturers Association (RMA), Rubber Han Extruded, Lathe-Cut and Cellular Products
ICS Number Code 23.040.80 (Seals for pipe and hose assemblies)
ASTM D1869-15, Standard Specification for Rubber Rings for Fiber-Reinforced Cement Pipe, ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top