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    FORD ESE-M8G66-A-1978 OIL SEAL POLYACRYLIC RUBBER《聚丙烯酸酯橡胶油封圈》.pdf

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    FORD ESE-M8G66-A-1978 OIL SEAL POLYACRYLIC RUBBER《聚丙烯酸酯橡胶油封圈》.pdf

    1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Para No. Revisions1978 07 14 Metricated & Retyped CE3H-RD782440-E1963 10 08 Released E7-2830Page 1 of 3OIL SEAL, POLYACRYLIC RUBBER ESE-M8G66-A1. SCOPE:The material defined by this specification is a polyacrylic rubbercompound

    2、 suitable for oil seals.2. APPLICATION:This specification was released originally for material used forcrankshaft seals.3. REQUIREMENTS:3.1 SLAB STOCK(ASTM D 3182, 0.075 +/- 0.005 in(1.91 +/- 0.13 mm) thick)3.1.1 Original PropertiesHardness, Durometer “A“ 65 - 75(ASTM D 2240)Tensile Strength, min 60

    3、0 psi (4.1 MPa)(ASTM D 412)Elongation, min 125%(ASTM D 412)3.1.2 Heat Aged(ASTM D 865, aluminum block,70 h at 149 +/- 1 C)Hardness, Durometer “A“ Change, max +20Tensile Strength No lossElongation, min 50%3.1.3 Immersion in ASTM Oil No. 1(ASTM D 471, aluminum block,70 h at 149 +/- 1 C)Hardness, Durom

    4、eter “A“ Change, max +17Tensile Strength No lossElongation, min 60%Volume Change -3 to +5%Volume change to be determined on typical seals in additionto slab stock from same batch of material.ENGINEERING MATERIAL SPECIFICATION ESE-M8G66-APage 2 of 33.1.4 Immersion in ASTM Oil No. 3(ASTM D 471, alumin

    5、um block,70 h at 149 +/- 1 C)Hardness, Durometer “A“ Change +/- 10Tensile Strength Change, max -20%Elongation, min 60%Volume Change 0 to +20%Volume change to be determined on typical seals in additionto slab stock from same batch of material.3.2 SEALS3.2.1 Hardness, Micro 62 - 75 IRHD(FLTM BP 6-2)3.

    6、2.2 Heat Aged(ASTM D 865, aluminum block,70 h at 149 +/- 1 C)Hardness, Change, max +15 IRHD3.2.3 Immersion in ASTM Oil No. 1(ASTM D 471, aluminum block,70 h at 149 +/- 1 C)Hardness, Change, max +15 IRHDVolume Change +/- 5%The weight of seal stock for volume change determinationshall be 0.4 g, minimu

    7、m. In some instances this willrequire several small seal samples to be used as the testspecimen.3.2.4 Immersion in ASTM Oil No. 3(ASTM D 471, aluminum block,70 h at 149 +/- 1 C)Hardness Change +/- 10 IRHDVolume Change 0 to +20%3.2.5 Adhesion (Rubber to Metal on Seal) No complete bondfailure3.3 SUPPL

    8、IERS RESPONSIBILITYMaterial supplied to this specification must be equivalent to thatoriginally approved. Changes in formulation or processing shallnot be made without prior approval as described in SupplierProcedure I-A.ENGINEERING MATERIAL SPECIFICATION ESE-M8G66-APage 3 of 34. APPROVAL OF SUPPLIE

    9、RS:Suppliers to this specification must be approved by the affected productengineering office. Procedure for gaining approval of a specificmaterial to a new/existing ES-M specification is contained in SupplierProcedure I-A. Approved new suppliers will be added to the EngineeringMaterials Approved Source List.


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