1、Designation:D186915Standard Specification forRubber Rings for Fiber-Reinforced Cement Pipe1This standard is issued under the fixed designation D1869;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number i
2、n parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This specification covers rubber rings used to seal thejoints
3、of asbestos-cement pipe conforming to SpecificationsC296,C428,C668,and non-asbestos fiber-cement pipe con-forming to Specification C1449.1.2 A specification is given for(1)natural or syntheticrubber rings,or both,where resistance to oil or solvents is notrequired,and(2)synthetic rubber rings for ser
4、vices involvingresistance to oil or solvents.1.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.4 WarningBreathing of asbestos dust is hazardous.Asbestos and asbestos products present demonstrated healthrisks for users and fo
5、r those with whom they come into contact.In addition to other precautions,when working with asbestos-cement products,minimize the dust that results.For informa-tion on the safe use of chrysotile asbestos,refer to“Safe Use ofChrysotile:A Manual on Preventive and Control Measures.”21.5 The following s
6、afety hazards caveat pertains only to thetest methods portion,Section 9,of this standard:This standarddoes not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand det
7、ermine the applicability of regulatory limitations priorto use.2.Referenced Documents2.1 ASTM Standards:3C296 Specification for Asbestos-Cement Pressure PipeC428 Specification forAsbestos-Cement Nonpressure SewerPipeC668 Specification for Asbestos-Cement Transmission PipeC1449 Specification for Non-
8、Asbestos Fiber-Cement Non-pressure Sewer PipeD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD573 Test Method for RubberDeterioration in an AirOvenD865 Test Method for
9、 RubberDeterioration by Heating inAir(Test Tube Enclosure)D1415 Test Method for Rubber PropertyInternationalHardnessD2137 Test Methods for Rubber PropertyBrittleness Pointof Flexible Polymers and Coated FabricsD2240 Test Method for Rubber PropertyDurometer Hard-ness2.2 Other Document:4Rubber Manufac
10、turers Association(RMA),Rubber Hand-book MO-1Molded,Extruded,Lathe-Cut and CellularProducts3.Composition and Manufacture3.1 The ring shall consist of a properly vulcanized virginrubber compound.Virgin rubber is defined as one containingno scrap,reclaim,or rubber substitutes.3.2 If a joint is used in
11、 the manufacture of the ring,thestrength of the spliced joint shall be such that the ring willwithstand the stretch test described in 9.8 with no visibleseparation or peeling.4.Physical Requirements4.1 Sample rings taken from the shipment shall conform tothe requirements for physical properties pres
12、cribed in Table 1when tested in accordance with the test methods specified inSection 9.1This specification is under the jurisdiction ofASTM Committee D11 on Rubberand is the direct responsibility of Subcommittee D11.37 on Coated Fabrics,RubberThreads and Seals.Current edition approved June 1,2015.Pu
13、blished August 2015.Originallyapproved in 1961.Last previous edition approved in 2010 as D1869 95(2010).DOI:10.1520/D1869-15.2Available from The Asbestos Institute,http:/ referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book
14、of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Available from Rubber Manufacturers Association(RMA),1400 K St.,NW,Suite 900,Washington,DC 20005,http:/www.rma.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA
15、19428-2959.United States1 5.Dimensions and Tolerances5.1 The rings shall conform to the dimensions specified bythe manufacturer of the pipe in which the rings are to be used,with an RMAClass 3(see 2.2)tolerance of 60.25 up to 25 mm(60.010 up to 1 in.)on all cross-section dimensions,and 61%on all dia
16、metral dimensions,unless otherwise agreed upon bythe pipe manufacturer and the ring supplier.NOTE1The design and tolerances of fiber-reinforced cement pipe arenot sufficiently standardized to permit interchangeability of rings in manycases from pipe of one manufacturer to that of another.6.Workmanship6.1 The surface shall be smooth and free of pitting,cracks,blisters,air marks,and any other imperfection that would affectits behavior in service.The body shall be free of porosity andair pockets.6.
