1、Designation: F1837M 97 (Reapproved 2012)1An American National StandardStandard Specification forHeat-Shrink Cable Entry Seals (Metric)1This standard is issued under the fixed designation F1837M; the number immediately following the designation indicates the year oforiginal adoption or, in the case o
2、f 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.1NOTEReapproved with editorial changes in October 2012.1. Scope1.1 This specification covers the general r
3、equirements forheat-shrink cable entry seals. Cable entry seals are intended formaking electrical cable penetrations into connection boxes,bulkheads, or other enclosures. These devices are suitable forboth thin wall enclosures up to 5 mm (316 in.) thick andthick-wall enclosures of 5 mm to 19 mm (316
4、 in. to34 in.) thick.1.2 Cable entry seals shall have factory-applied adhesivethat provides the seal to wire and cable jackets.1.3 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.4 This standard does not purport to address al
5、l 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:2D149 Test Method
6、 for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD570 Test Method for Wa
7、ter Absorption of PlasticsD635 Test Method for Rate of Burning and/or Extent andTime of Burning of Plastics in a Horizontal PositionD747 Test Method for Apparent Bending Modulus of Plas-tics by Means of a Cantilever BeamD792 Test Methods for Density and Specific Gravity (Rela-tive Density) of Plasti
8、cs by DisplacementD2240 Test Method for Rubber PropertyDurometer Hard-nessD2671 Test Methods for Heat-Shrinkable Tubing for Elec-trical UseD2863 Test Method for Measuring the Minimum OxygenConcentration to Support Candle-Like Combustion ofPlastics (Oxygen Index)D3149 Specification for Crosslinked Po
9、lyolefin Heat-Shrinkable Tubing for Electrical InsulationD4572 Test Method for Rubber ChemicalsWet SieveAnalysis of SulfurD4732 Specification for Cool-Application Filling Com-pounds for Telecommunications Wire and Cable2.2 ASME StandardASME B1.1 Unified Inch Screw Threads (UN and UNRThread Form)32.3
10、 NEMA Standards:4NEMA 250 Enclosures for Electrical Equipment (1000 VoltsMax)2.4 IEC Standard:IEC 68-2-6 Environmental TestingPart 2: TestsTest FC:Vibration (Sinusoidal) Sixth Edition53. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 heat-shrink cable entry seal, nheat-shrinkabl
11、e tubemaking a watertight, fume-tight seal where cable connectionsboxes, bulkheads, or other enclosures.3.1.2 polyolefin, na polymer made by the polymerizationof hydrocarbon olefins or copolymerization olefins.1This specification is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Tec
12、hnologyand is the direct responsibility of Subcommittee F25.10 onElectrical.Current edition approved Oct. 1, 2012. Published October 2012. Originallyapproved in 1997. Last previous edition approved in 2007 as F1837M - 97(2007).DOI: 10.1520/F1837M-97R12E01.2For referenced ASTM standards, visit the AS
13、TM 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 American Society of Mechanical Engineers (ASME), ASMEInternational Headquarters, Three Pa
14、rk Ave., New York, NY 10016-5990, http:/www.asme.org.4Available from National Electrical Manufacturers Association (NEMA), 1300N. 17th St., Suite 1752, Rosslyn, VA 22209, http:/www.nema.org.5Available from International Electrotechnical Commission (IEC), 3, rue deVarembe, Case Postale 131, CH-1211,
15、Geneva 20, Switzerland.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14. Classification4.1 Heat-shrink cable entry seals shall be of the followingtypes:4.1.1 Type 1, standard cable entry seals for thin-wall enclo-sures shall consist
16、of the three part assembly; a rigid plasticnut, O-ring, and heat-shrinkable molded area.4.1.1.1 Type I1, molded area configured with one openingfor a single wire or cable entry.4.1.1.2 Type I2, molded area configured with two equalsize openings to seal two wires or cables.4.1.1.3 Type I3, molded are
17、a configured with three equalsize openings to seal three wires or cables.4.1.1.4 Type I4, molded area configured with four equalsize openings to seal four wires or cables.4.1.1.5 Type I5, molded area configured with six equal sizeopenings to seal six wires or cables.4.1.1.6 Type I6, molded area conf
18、igured with eight equalsize openings to seal eight wires or cables.4.1.2 Type II, cable entry seal for threaded hole applicationsshall consist of a one-part assembly that combines a taperednational pipe thread (NPT) in rigid plastic with heat-shrinkablemolded area.4.1.2.1 Type II1, molded area confi
19、gured with one openingfor a single wire or cable entry.4.1.2.2 Type II2, molded area configured with two equalsize openings to seal two wires or cables.4.1.2.3 Type II3, molded area configured with three equalsize openings to seal three wires or cables.4.1.2.4 Type II4, molded area configured with f
20、our equalsize openings to seal four wires or cables.4.1.3 Type III, right angle cable entry seal for thin-wallenclosure shall consist of a three part assembly; a rigid plasticnut, O-ring, and heat-shrinkable molded area.4.1.4 Type IV, right angle cable entry seal for threaded holeapplication shall c
21、onsist of a one-part assembly that combinesa tapered national pipe thread (NPT) in rigid plastic with aheat-shrinkable molded area.5. Ordering Information5.1 Orders for cable entry seals under this specification shallinclude the following:5.1.1 Part Number (see Figs. 1-6).5.1.2 Quantity (per each pa
22、rt).6. Materials and Manufacture6.1 The rigid plastic parts shall be made from polyamide(nylon), or polyester material, or both. The material shall beGroup 1, Class 8, Grade 1 as specified in Specification D4066.6.1.1 Threads shall be unified form UN 2A or 2B or taperpipe thread (NPT) as specified i
23、n ASME B1. 1.6.2 The heat-shrinkable tubing shall be of a crosslinkedpolyolefin in accordance with Type III of Specification D3149.6.3 The adhesive shall be general purpose high-bond-strength adhesive sealant that provides stain relief and envi-ronmental sealing of heat-shrink tubing to cable jacket
24、s.6.4 O-rings shall be made of a material conforming to TypeII of Specification D4732.6.5 The polyolefin heat-shrinkable tubing shall met require-ments of Test Methods D2671.7. Other Requirements7.1 Dimensional RequirementsCable-entry seals shallconform to the dimensional requirements of Tables 1-6.
25、 Type Icable-entry seals are presented in Fig. 1 and Fig. 2. Type IIcable-entry seals are presented in Fig. 3 and Fig. 4. Right-anglecable-entry seals (Types III and IV) are presented in Fig. 5 andFig. 6.7.2 Performance Requirements:7.2.1 Vibration ResistanceWhen cable-entry seals aretested as speci
26、fied in 9.1, there shall be no evidence of crackingor loosening of parts.7.2.2 RuggednessWhen cable-entry seals are subjected toa mechanical abuse test as specified in 9.2, there shall be nocracking, breaking, distortion, or damage to the sample.7.2.3 Effectiveness of SealWhen cable-entry seals aret
27、ested as specified in 9.3, there shall be no evidence of leakagethrough or around the cable entry seals.8. Workmanship, Finish, and Appearance8.1 Cable-entry seals shall be free from warp, cracks,chipped edges, or surfaces, blisters, uneven surfaces, scratches,dents, and flow lines. They shall be fr
28、ee from fins, burrs, andunsightly finish caused by chipping, filling, or grinding withoutsubsequent buffing or polishing. All molded parts shall becleaned thoroughly of annealing mediums.9. Test Methods9.1 Conformance testing of a random sample may berequested by the purchaser in order to verify tha
29、t selectedperformance characteristics specified herein have been incor-porated in the cable-entry seal design and maintained inproduction.9.1.1 VibrationThe cable-entry seals shall be subjected tovibration testing as specified in IEC Standard 68-2-6. Thefollowing details shall apply:9.1.1.1 The cabl
30、e-entry seals shall be complete with O-ringsand 1 to 2-m (3 to 6 ft) lengths of cable of appropriate size.9.1.1.2 The free end of the cables shall be secured to preventexcessive cable whipping action during test.9.1.1.3 Tests are to be carried out in three perpendicularplanes.FIG. 1 Type ISingle-Leg
31、ged Standard Cable Entry SealsF1837M 97 (2012)129.1.1.4 Duration of the test for no resonance condition shallbe 90 min at 30 Hz. Duration at each resonance frequency atwhich Q2 is recorded. It is recommended as guidance that Qdoes not exceed 5.9.1.1.5 Test range shall be 2 6 0.3 Hz to 13.2 Hzamplitu
32、de61 mm: 13.2 Hz to 100 Hzacceleration 67g.9.1.1.6 Nonconformance to the requirements of 7.2.1 shallbe cause for rejection.9.2 Mechanical Abuse Test:9.2.1 A mechanical abuse test shall be conducted on thesample cable-entry seal assembled on the end of a 2-m (6-ft)length of electrical cable of approp
33、riate size.9.2.2 The cable-entry seal shall be allowed to swing on aradius, while suspended by the electrical cable, from a verticalsurface and strike against a vertical flat steel plate on thatsurface. The vertical distance through which the cable entryseal is allowed to fall shall be 1.5 m (5 ft),
34、 and the number ofimpacts shall be ten.9.2.3 The cable-entry seal shall be disassembled and exam-ined. Nonconformance to the requirements of 7.2.2 shall because for rejection.9.3 Level of EffectivenessAcomplete cable-entry seal withO-ring installed and assembled properly and shrunk to a cableor with
35、 a plug installed shall conform to the performancerequirements of NEMA 250. The NEMA enclosure typedesignation (4, 4X, 6, 6P) shall establish the appropriateenvironmental capability required of the installed cable-entryseal.9.3.1 Nonconformance to the requirements of 7.2.3 shall because for rejectio
36、n.10. Inspection.10.1 Visual and Dimensional Examination Samples shallbe examined visually to verify that the materials, design,construction, physical dimensions, marking, and workmanshipare as specified in the applicable requirements.11. Certification11.1 Material CertificationMaterial certificatio
37、n shall berequired from the manufacturers of the plastic material andshirk-tubing to ensure the materials were manufactured,FIG. 2 Type IMulti-Legged Standard Cable Entry SealsFIG. 3 Type IISingle-Legged Threaded Cable Entry SealsFIG. 4 Type IIMulti-Legged Threaded Cable Entry SealsF1837M 97 (2012)1
38、3sampled, tested, and inspected in accordance with Specifica-tions D4066 and D3149. Material identity traceable to thiscertification shall be maintained throughout the manufacturingprocess.11.2 When specified in the purchase order or contract, thepurchaser shall be furnished certification that sampl
39、es repre-senting each lot have been either tested or inspected as directedin this specification and the requirements have been met. Whenspecified in the purchase order or contract, a report of the testresults shall be furnished.12. Product Marking12.1 Each cable-entry seal shall be identified distin
40、ctly. Thename of the manufacturer, part number, identification of thisASTM standard, and other appropriate information shall beshown thereon.FIG. 5 Type IIIRight-Angle Cable Entry SealsFIG. 6 Type IVRight-Angle Cable Entry SealsF1837M 97 (2012)1413. Packaging Requirements13.1 The seals shall be supp
41、lied by type as specified in Figs.1-6.13.2 The seals shall be packaged in conformance with goodcommercial practice unless otherwise specified. Individualtypes and sizes shall be neatly bundled or boxed. The exteriorshipping container shall be acceptable by parcel post orcommon carrier.13.3 Each bund
42、le or container of seals shall be identifieddistinctly by a tag or label. The name of the manufacturer, thepart number of the seals, the quantity, and other appropriateinformation shall be shown thereon.14. Quality Assurance14.1 Responsibility for Inspection Unless otherwise speci-fied in the contra
43、ct or purchase order, the manufacturer isresponsible for the performance of all inspection requirementsas specified herein. Except as otherwise specified in thecontract or purchase order, the manufacturer may use his ownor any other facilities suitable for the performance of theinspection requiremen
44、ts specified.14.2 Responsibility for Compliance All items must meetall requirements of Section 7. The inspection set forth in thisspecification shall become a part of the manufacturers overallinspection system or quality program. The absence of anyinspection requirements in this specification shall
45、not relievethe manufacturer of the responsibility of assuring that allproducts or supplied submitted to the customer for acceptancecomply with all the requirements of the contract. Sampling inquality conformance does not authorize submission of knowndefective material either indicated or actual, nor
46、 does it committhe customer to acceptance of defective material.TABLE 1 Type 1Single Legged Standard Cable Entry SealsACBATubingExpanded I.D. Recovered I.D. Overall Nominal(min) (max) I.D. (min) Recovered Recommended Part No.BLength Hole Diameter13.0 (0.50) 3.0 (0.12) 19.0 (0.75) 89.0 (3.50) 25.5 (1
47、.00) CES S 1-119.0 (0.75) 6.5 (0.25) 19.0 (0.75) 89.0 (3.50) 25.5 (1.00) CES S 1-219.0 (0.75) 6.5 (0.25) 19.0 (0.75) 32.0 (1.25) 25.5 (1.00) CES S 1-328.5 (1.20) 13.0 (0.50) 28.0 (1.10) 95.0 (3.75) 35.0 (1.38) CES S 1-435.0 (1.38) 13.0 (0.50) 28.0 (1.10) 95.0 (3.75) 44.5 (1.75) CES S 1-540.0 (1.70)
48、19.0 (0.75) 40.0 (1.60) 120.0 (4.75) 51.0 (2.00) CES S 1-670.0 (2.75) 19.0 (0.75) 53.0 (2.10) 102.0 (4.00) 60.0 (2.36) CES S 1-770.0 (2.75) 36.0 (1.43) 74.0 (2.90) 178.0 (7.00) 89.0 (3.50) CES S 1-8ADimensions shown are nominal and in millimeters (in).BPart numbers were established in the following
49、way:CEScable entry seal,S or Tstandard or threaded, and1-1number preceding hyphen represents number legs; number following hyphen represents size type.TABLE 2 Type 1Multi-Legged Standard Cable Entry SealsABAMulti-Leg BootExpanded I.D. Recovered I.D.Min. Max. Overall Nominal(Each Leg) (Each Leg) I.D. (min) Recovered RecommendedNo. of Legs Length Hole Diameter Part No.B2 10.0 (0.40) 3.0 (0.11) 19.0 (0.75) 89.0 (3.50) 25.5 (1.00) CES S 2-12 15.0 (0.60) 4.5 (0.17) 28.0 (1.10) 95.0 (3.75) 35.0 (1.38) CES S 2-22 23.0 (0.90) 7.5 (0.30)
