ASTM_F_1836M_-_09_2013.pdf

Designation:F1836M09(Reapproved 2013)An American National StandardStandard Specification forStuffing Tubes,Nylon,and Packing Assemblies(Metric)1This standard is issued under the fixed designation F1836M;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in 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 the general requirements fornylon stuffing tubes and packing assemblies.Nylon stuffingtubes are intended for making electric cable penetrations inmarine shipboard enclosures for electrical equipment.Thefollowing types are suitable for both thin-wall enclosures up to5 mm(316in.)thick and thick-wall enclosures,bulkheads,anddecks of 5 to 19 mm(316to34in.)thick.1.2 This specification does not cover metal stuffing tubes.1.3 The values stated in SI units are to be regarded asstandard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to its use.2.Referenced Documents2.1 ASTM Standards:2D2000 Classification System for Rubber Products in Auto-motive ApplicationsD4066 Classification System for Nylon Injection and Extru-sion Materials(PA)2.2 NEMA Standards:Standard 250 Enclosures for Electrical Equipment(1000 VMax)32.3 ASME Standard:ASME B1.1 Unified Inch Screw Threads(UN and UNRThread Form)42.4 IEC StandardStandard 68-2-6 Environmental TestingPart 2:TestsTestFC:Vibration(Sinusoidal)Sixth Edition53.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 nylon stuffng tube,na marine electrical fitting usedfor the sealing of cable penetration into shipboard enclosureswhile maintaining or exceeding the degree of protection forwhich the enclosure is rated.3.1.2 packing assembly,nthe compressible insert for thenylon stuffing tube.It consists of one neoprene bushing andthree nylon washers.3.1.3 enclosure,nan electrical panel,cabinet,junctionbox,light fixture,electrical equipment,control box,or panel.4.Classification4.1 Nylon stuffing tubes shall be of the following types(seeFig.1):4.1.1 Type 1straightUnified Form Thread.4.1.2 Type 290Unified Form Thread.4.1.3 Type 3NPTAmerican Standard Pipe Thread.4.1.4 Type 4YUnified Form Thread.5.Ordering Information5.1 Orders for stuffing tubes under this specification shallinclude the following:5.1.1 Type(see 4.1).5.1.2 Part number(see Table 1).5.1.3 Packing assembly size(see Fig.2 and Table 2).5.1.4 The O-ring included in the stuffing tube assembly hasa finite shelf life.If the stuffing tube assembly is used after theshelf life has expired,the O-ring should be replaced,using theappropriate size listed in Table 1.1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.10 onElectrical.Current edition approved Oct.1,2013.Published October 2013.Originallyapproved in 1997.Last previous edition approved in 2009 as F1836M-09.DOI:10.1520/F1836M-09R13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from National Electrical Manufacturers Association(NEMA),1300N.17th St.,Suite 1752,Rosslyn,VA 22209,http:/www.nema.org.4Available from the International Electrotechnical Commission,3 rue deVarembe,Case postale 131,CH-1211,Geneva 20,Switzerland.5Available from American Society of Mechanical Engineers(ASME),ASMEInternational Headquarters,Three Park Ave.,New York,NY 10016-5990,http:/www.asme.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.1.5 ASTM Part Number.The part number comprises theASTM specification number,type designator and assigneddash number as shown in the following example:F1836MType-3-002ASTMDesignatorPart TypeDesignatorSizeDesignatorExample:F1836M Type-3-002:Size 2 NPT stuffing tube(see Fig.1).6.Materials and Manufacture6.1 Materials:6.1.1 Polyamide(nylon)molding plastic material shall beGroup 1,Class 8,Grade 1 in accordance with SpecificationD4066.6.1.2 Synthetic rubber(neoprene)shall be in accordancewith Classification D2000,M2,BC,410,A14,B14,C12,andF19.6.2 Manufacture:6.2.1 Molded nylon parts,such as body,washers,locknut,and cap,shall meet the requirements specified herein.6.2.2 Threads shall be unified form UN 2A or 2B or taperpipe thread(NPT)as specified in ASME Standard B1.1.FIG.1 Stuffing Tube TypesF1836M 09(2013)2 6.2.3 Neoprene parts,such as bushing and plug,shall meetthe requirements spe