1、Designation: C 1115 06Standard Specification forDense Elastomeric Silicone Rubber Gaskets andAccessories1This standard is issued under the fixed designation C 1115; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last r
2、evision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification describes products composed of denseelastomeric silicone rubber that are fabricated into gaskets andacce
3、ssories (such as setting blocks, spacers, and shims) for usein sealing and glazing applications in building construction.These products are used to seal or serve as components ofcompression sealing systems between mechanically restrainedsurfaces in building construction and also as components instru
4、ctural silicone sealant glazing systems.1.2 The values stated in metric (SI) units are to be regardedas the standard.The inch-pound values given in parentheses areprovided for information purposes only.1.3 Test Method C 1166, as referenced in this specification,should be used to measure and describe
5、 the properties ofmaterials, products, or assemblies in response to heat and flameunder controlled laboratory conditions and should not be usedto describe or appraise the fire hazard or fire risk of materials,products, or assemblies under actual fire conditions. However,results of this test may be u
6、sed as elements of a fire riskassessment that takes into account all of the factors which arepertinent to an assessment of the fire hazard of a particular enduse.1.4 The following precautionary statement pertains only tothe test method portion, Section 10, of this specification. Thisstandard does no
7、t purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.1.5 The committee with jurisdiction over t
8、his standard is notaware of any comparable standards published by other orga-nizations.2. Referenced Documents2.1 ASTM Standards:2C 717 Terminology of Building Seals and SealantsC 1087 Test Method for Determining Compatibility ofLiquid-Applied Sealants with Accessories Used in Struc-tural Glazing Sy
9、stemsC 1166 Test Method for Flame Propagation of Dense andCellular Elastomeric Gaskets and AccessoriesD 395 Test Methods for Rubber PropertyCompressionSetD 412 Test Methods for Vulcanized Rubber and Thermo-plastic ElastomersTensionD 573 Test Method for RubberDeterioration in an AirOvenD 624 Test Met
10、hod for Tear Strength of ConventionalVulcanized Rubber and Thermoplastic ElastomersD 792 Test Methods for Density and Specific Gravity (Rela-tive Density) of Plastics by DisplacementD 925 Test Methods for Rubber PropertyStaining of Sur-faces (Contact, Migration, and Diffusion)D 1149 Test Method for
11、Rubber DeteriorationSurfaceOzone Cracking in a ChamberD 1566 Terminology Relating to RubberD 2137 Test Methods for Rubber PropertyBrittlenessPoint of Flexible Polymers and Coated FabricsD 2240 Test Method for Rubber PropertyDurometerHardnessD 3182 Practice for RubberMaterials, Equipment, andProcedur
12、es for Mixing Standard Compounds and Prepar-ing Standard Vulcanized Sheets2.2 Rubber Manufacturers Association (RMA) Standard:Rubber Handbook, Fourth Ed., December 198432.3 Other Documents:1This specification is under the jurisdiction of ASTM Committee C24 onBuilding Seals and Sealants and is the di
13、rect responsibility of Subcommittee C24.73on Compression Seal and Lock Strip Gaskets.Current edition approved May 1, 2006. Published May 2006. Originallyapproved in 1991. Last previous edition approved in 2000 as C 1115 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orconta
14、ct 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 the Rubber Manufacturers Association, 1400 K St., NW,Washington, DC 20005.1Copyright ASTM International, 100 Barr Harbor D
15、rive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Uniform Freight Classification Rules4National Motor Freight Classification Rules53. Terminology3.1 Refer to Terminology C 717 for definitions of thefollowing terms used in this specification: compound, com-pression gasket, edge space
16、r, elastomer, elastomeric, expansiongasket, gasket, hardness, seal, setting block, shim spacer, andspacer.3.2 Refer to Terminology D 1566 for definitions of thefollowing terms used in this specification: compression set,ultimate elongation, tear strength, tensile strength, and poly-mer.4. Classifica
17、tion4.1 The products described by this specification are classi-fied by type, hardness, class, and surface.4.2 Type:4.2.1 Type T, Tear ResistantIn general these productshave a higher level of tear resistance, midrange heat agingcharacteristics, midrange compression set resistance, and 30 to70 durome
18、ter hardness. This type is applicable where finishedproducts are intended to bridge or to cover a space (forexample, expansion joint gaskets), or where high tear strengthis required due to conditions of exposure or usage.4.2.2 Type C, Compression Set ResistantIn general, theseproducts have a lower l
19、evel of tear resistance, above midrangeheat aging characteristics, a high level of compression setresistance, and 30 to 85 durometer hardness. This type isapplicable where finished products are used as compressiongaskets, or where low compression set is required due toconditions of exposure or usage
20、; and as settingblocks, spacers,shims, or other accessories in glazing and sealing systems.4.3 HardnessEach type described in 4.2 is subdividedinto various hardnesses, based on nominal durometer hardnessas shown in Table 1 and Table 2. For example, Grade H3 is 30durometer.4.4 Class:4.4.1 Flame propa
21、gation characteristics of the finished prod-ucts can be varied depending on the degree of exposure,expected usage, and intended durability desired. Productsdescribed by this specification shall be classified as to flamepropagation as follows:4.4.1.1 Class FResistance to flame propagation is re-quire
22、d.4.4.1.2 When no flame propagation resistance is required,no class designation should be used.4.5 Surface:4.5.1 Consideration of product surface requirements may benecessary. During the production of these products the use ofvarious lubricants, release agents, dusting agents, and othersolutions may
23、 be required. It may be necessary after vulcani-zation to remove these materials from the surfaces of theproduct because of appearance, fabrication, or usage require-ments. All products do not require removal of those materialsor removal to the same degree of cleanliness.4.5.2 Products may also be r
24、equired to develop adhesion orto not develop adhesion to sealants with which they are incontact.4.5.3 Products described by this specification shall be clas-sified as to surface condition as follows:4.5.3.1 Surface S1The surface of the product shall besmooth, clean, free from any foreign matter, and
25、 shall not allowadhesion of sealants (see Note 1).4Available from Western Railroad Assn, Department of Services and Supply,Room 1150, 222 S. Riverside Plaza, Chicago, IL 60606-5945.5Available from National Motor Freight Assn, 2200 Mill Road, Alexandria, VA22314.TABLE 1 Requirements for Dense Elastom
26、eric Silicone Rubber Gaskets and Accessories, Type TTear ResistantPropertyHardnessTest Method34567Low temperature flexibilityAAAAAD 2137Hardness, Type A durometer, 65points30 40 50 60 70 D 2240Compression set, max % 30 30 30 30 30 D 395Tensile strength, min, MPa (psi) 7 (1015) 8 (1160) 8 (1160) 8 (1
27、160) 7 (1015) D 412Ultimate elongation, min % 500 500 500 400 200 D 412Heat aging D 573Hardness change, max durometerpoints610 610 610 610 610Tensile strength change, max % 620 620 620 620 620Ultimate elongation change, max % 630 630 630 630 630Ozone resistanceBBBBBD 1149(Specimen A)Tear Strength, m
28、in, kN/m (ppi) 25 (143) 25 (143) 26 (149) 26 (149) 25 (143) D 624Flame propagationC, mm (in.) 100 (4) 100 (4) 100 (4) 100 (4) 100 (4) C 1166Specific gravityDDDDDD 792StainingEEEEED 925ColorFFFFFGANo failure.BNo cracks at 73 magnification.CIf Class F-Resistance to flame propagation is required.DWithi
29、n 60.05 of qualified compound.EAs specified by purchaser (see 10.11).FAs specified by purchaser.GSee 10.12.C11150624.5.3.2 Surface S2The surface of the product shall besmooth, clean, free from any foreign matter, and shall allowadhesion of sealants (see Note 1).NOTE 1Applied treatments, such as dust
30、ing or coating to the adhesionsurface may be necessary to meet this requirement.4.5.3.3 Surface S3The product shall have a surface that issmooth, clean, and free from any foreign matter.4.5.4 Products not requiring special cleaning for removal ofprocessing agents and materials should not be assigned
31、 asurface designation code.4.6 The following is an illustration of the use of theclassification system for a line call-out. Expansion gasketsshall be ASTM C1115, TH5FS3.Type Hardness Class SurfaceTH5FS34.6.1 Other examples of line call-outs would be: edgespacers for structural silicone glazing shall
32、 be ASTM C 1115,CH6S1; compression seal gaskets shall be ASTM C 1115,CH7S2; and setting blocks shall beASTM C 1115, CH9. Theseexamples are not to be construed as a specification for theseitems.5. Materials and Manufacture5.1 The silicone rubber shall be manufactured from virginpolymer, that when pro
33、perly compounded and cured, willresult in an elastomer that will comply with this specification.5.2 The compound in its final shape shall be free of visibleinternal porosity, surface defects, and dimensional irregulari-ties that affect serviceability and durability.5.3 Unless otherwise specified, th
34、e compound color shall beblack. If colors other than black are specified, the compound inthe color specified shall also meet the requirements of thisspecification.6. Dimensions and Permissible Variations6.1 Dimensions can be affected by distortions induced byconditions of storage or shipping as well
35、 as temperature andhumidity variations. Prior to measuring the product, it shall beunpacked and conditioned in an unstressed state for 24 h at 236 2C (73 6 4F) and 50 6 5 % relative humidity.6.2 Permissible variation in cross-sectional dimensions shallbe as specified in Table 3 unless otherwise agre
36、ed uponbetween the purchaser and the supplier.6.3 Tolerances for squareness and flatness are not includedin this specification, due to the difficulty of establishingmeaningful limits to satisfy a wide variety of applications.These tolerances should be as agreed upon between thesupplier and purchaser
37、.TABLE 2 Requirements for Dense Elastomeric Silicone Rubber Gaskets and Accessories, Type CCompression Set ResistantPropertyHardnessTest Method3456789Low temperature flexibilityAAAAAAAD 2137Hardness, Type A durometer, 65points30 40 50 60 70 80 85 D 2240Compression set, max % 15 15 15 15 15 20 25 D 3
38、95Tensile strength, min, MPa (psi) 5 (725) 5 (725) 5 (725) 5 (725) 5 (725) 5 (725) 5 (725) D 412Ultimate elongation, min, % 350 300 250 200 125 100 60 D 412Heat aging D 573Hardness change, max, durometerpoints605 605 605 605 605 605 605Tensile strength change, max, % 615 615 615 615 615 615 615Ultim
39、ate elongation change,max, %630 630 630 630 630 630 630Ozone resistanceBBBBBBBD 1149(Specimen A)Tear strength, min, kN/m (ppi) 9 (51) 9 (51) 9 (51) 9 (51) 9 (51) 9 (51) 7 (40) D 624Flame propagationC, mm (in.) 100 (4) 100 (4) 100 (4) 100 (4) 100 (4) 100 (4) 100 (4) C 1166Specific gravityDDDDDDDD 792
40、StainingEEEEEEED 925ColorFFFFFFFGANo failure.BNo cracks at 73 magnification.CIf Class F-Resistance to flame propagation is required.DWithin6 0.05 of qualified compound.EAs specified by purchaser, see 10.11.FAs specified by purchaser.GSee 10.12.TABLE 3 Standards for Cross-Sectional ToleranceNOTE 1Dim
41、ensional tolerances for outside diameters, inside diam-eters, wall thickness, width, height, and general cross-sectional dimen-sions of extrusionsRubber Manufacturers AssociationARMA Class 2 Precision RMA Class 2 PrecisionDrawing Designation E2 Drawing Designation E2Dimensions (in inches) Dimensions
42、 (in Millimeters)Above Up To Above Up To0 0.06 60.010 0 1.5 60.250.06 0.10 0.014 1.5 2.5 0.350.10 0.16 0.016 2.5 4.0 0.400.16 0.25 0.020 4.0 6.3 0.500.25 0.39 0.027 6.3 10.0 0.700.39 0.63 0.031 10.0 16.0 0.800.63 0.98 0.039 16.0 25.0 1.000.98 1.57 0.051 25.0 40.0 1.301.57 2.48 0.063 40.0 63.0 1.602.
43、48 3.94 0.079 63.0 100.0 2.00AAdapted from Rubber Manufacturers Association Handbook, Table 13, FifthEd., 1992C11150637. Requirements7.1 The physical, mechanical, and performance propertiesof the material shall conform to the requirements as describedby Table 1 and Table 2.8. Significance and Use8.1
44、 This specification describes types (based on resistanceto tearing and compression set), grades (based on durometerhardness), class (based on flame propagation requirements),and surfaces (based on surface characteristics) of products aslisted in Section 4 for various applications. It is essential,th
45、erefore, that the applicable type, grade, class, and surface bespecified, as well as other options stated, so that the properproduct is provided for the intended use.9. Sampling9.1 Samples for testing to the requirements of this specifi-cation shall be taken from the finished product whereverpossibl
46、e.9.2 When the size or shape of the finished product makes itimpossible to obtain the type of samples indicated by thevarious test methods, the manufacturer shall furnish a sufficientnumber of appropriate test slabs, strips or blocks, prepared inaccordance with Recommended Practice D 3182. The slabs
47、,strips, or blocks shall be prepared from the same compoundand shall be of a comparable state of cure as the finishedproduct.10. Test Methods10.1 Low Temperature FlexibilityTest Methods D 2137,Method A. All test specimens shall exhibit no failure at orabove 40C (40F). Dimethylpolysiloxane fluids sha
48、ll notbe used in the performance of this test method.10.2 HardnessTest Method D 2240, Type A Durometer.Depending on the size and shape of the product, measurehardness on a finished surface, a squarely cut end, or a slicedor buffed flat surface (see Note 2).NOTE 2Hardness readings for the purpose of
49、approximate determi-nations may be taken from the dumbbell test specimens, recognizing thatthese readings may vary slightly from those taken from the finishedproduct.10.3 Compression SetTest Methods D 395, Method B,Specimen Type 1. Oven age specimens for 22 h at 100 6 2C(212 6 3.6F). Where plied test specimens are necessary, thetesting results shall comply with the requirements of Table 1and Table 2.10.4 Tensile StrengthTest Methods D 412,Test MethodA,Die C.10.5 Ultimate ElongationTest Methods D 412, TestMethod A, Die C.10.6 Heat AgingTest Method D
