ASTM_D_1330_-_04_2015e1.pdf

Designation:D133004(Reapproved 2015)1Standard Specification forRubber Sheet Gaskets1This standard is issued under the fixed designation D1330;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.1NOTEEditorially corrected 9.1.2 and 9.1.3 in June 2015.1.Scope1.1 This specification covers gaskets cut from sheet rubberthat are intended for general gasket applications on water,air,and low-pressure steam.They are not intended for use with oilsand strong acids.1.2 The values stated in SI units are to be regarded as thestandard.2.Referenced Documents2.1 ASTM Standards:2D395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD573 Test Method for RubberDeterioration in an AirOvenD865 Test Method for RubberDeterioration by Heating inAir(Test Tube Enclosure)D1415 Test Method for Rubber PropertyInternationalHardnessD2240 Test Method for Rubber PropertyDurometer Hard-nessD3182 Practice for RubberMaterials,Equipment,and Pro-cedures for Mixing Standard Compounds and PreparingStandard Vulcanized SheetsD3183 Practice for RubberPreparation of Pieces for TestPurposes from Products3.Materials and Manufacture3.1 Compounds furnished under this specification shall bemanufactured from natural rubber,reclaimed rubber,syntheticrubber,or mixtures thereof,together with added compoundingmaterials.The compound shall be suitably vulcanized.Thematerial shall be of a uniform quality and thickness,and shallhave a smooth or fine fabric surface.4.Color4.1 The material shall be red or black as specified.5.Physical Properties5.1 This material shall conform to the requirements as tophysical properties prescribed in Table 1.Gaskets for contactwith water shall conform to Grade I requirements,gaskets forcontact only with air shall conform to Grade II,and gaskets forcontact with low-pressure steam shall conform to Grade III.6.Dimensional Tolerances6.1 The material shall conform to the requirements as todimensional tolerances prescribed in Table 2.7.Workmanship,Finish,and Appearance7.1 All materials and workmanship shall be in accordancewith good commercial practice,and the resulting stock shall befree from porous areas,air pockets,foreign matter,or otherdefects affecting serviceability.8.Sampling8.1 When proof of conformance with this specification isrequired,the samples shall be taken from the finished productwhenever possible.When the thickness of the finished productis less than 1.6 mm(116in.),the manufacturer shall,uponrequest of the purchaser,at the time of ordering,furnish asufficient number of test slabs or blocks prepared in accordancewith Practice D3182 for the proper performance of the requiredtests.The slabs or blocks shall be prepared from a batch ofcompound similar to that used in the lot.In the case of gasketscut from sheet,the manufacturer shall furnish a 305-mm(12-in.)square sample of the uncut sheet.Unless otherwisespecified,a lot shall consist of all products of the samethickness,submitted for inspection at the same time.Allsamples shall be prepared in accordance with Practices D3182and D3183.1This specification is under the jurisdiction of the ASTM Committee D11 onRubber and is the direct responsibility of Subcommittee D11.37 on Coated Fabrics,Rubber Threads and Seals.Current edition approved June 1,2015.Published September 2015.Originallyapproved in 1954.Last previous edition approved in 2010 as D1330 04(2010).DOI:10.1520/D1330-04R15E01.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 9.Test Methods9.1 The properties enumerated in this specification shall bedetermined in accordance with the following methods,exceptas modified in accordance with certain of the references givenbelow:9.1.1 HardnessTest Methods D1415(preferred)orD2240,except that superimposed buffed specimens,takenfrom sheet 1.6 mm(116in.)thick and over,may be used.9.1.2 Tensile StrengthTest Methods D412.Percentagechange in tensile strength shall be determined after air-agingfor 94 6 2 h,at 70 6 2C(158 6 3.6F)for Grades I and IIor 125 6 2C(257 6 3.6F)for Grade III.9.1.3 Compression SetTest Method B of Test MethodsD395.The sample under test shall be held for 22 6 0.25 h,at70 6 2C(158 6 3.6F)for Grades I and II or 125 6 2C(2576 3.6F)for Grade III.Buffed specimens,taken from sheet 1.5mm(0.06 in.)thick and over,may be plied to obtain therequired thickness.9.1.4 Air-AgingTest Method D865(prefe