1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 06 30 Revised Para 3.0 inserted; para 3.6, 3.8, 3.9 & 4 deleted 1988 03 01 Revised CR/CR 132294-P T. P. Koch1981 11 24 Released PCR PA868687-PPrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 2 ACRYLO
2、NITRILE RUBBER, DUST SEAL ESP-M2D166-A2 1. SCOPE The material defined by this specification is a mineral filled hard rubber ring on the rubber boot of the transmission extension oil seal assembly. 2. APPLICATION This specification was released originally for material used as a dust seal to exclude d
3、irt from the slip yoke. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 ORIGINAL PROPERTIES, SLAB STOCK 3.1.1 Hardness, Durometer D 52 - 62 (ASTM
4、 D 2240) 3.1.2 Tensile Strength, min 9 MPa (ASTM D 412, Die C) Elongation, min 40% 3.2 HEAT AGING (ASTM D 865, 70 h at 150 +/- 2 C) Hardness, Durometer D Change, max +20 Tensile Strength Change, max -70% Elongation Change, max -100% 3.3 IMMERSION IN ASTM OIL NO. 1 (ASTM D 471, 70 h at 150 +/- 2 C, a
5、luminum block) Hardness, Durometer D Change, max +15 Tensile Strength Change, max +55% Elongation Change, max -100% Volume Change, max -10% ENGINEERING MATERIAL SPECIFICATIONESP-M2D166-A2Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 2 3.4 IMMERSION IN ASTM O
6、IL NO. 3 (ASTM D 471, 70 h at 150 +/- 2 C, aluminum block) Hardness, Durometer D Change, max +10 Tensile Strength Change, max +30% Elongation Change, max -90% Volume Change, max +10% 3.5 IMMERSION IN APPROVED ATF (ASTM D 471, 70 h at 150 +/- 2 C, aluminum block) Hardness, Durometer D Change, max +15 Tensile Strength Change, max -30 to +30% Elongation Change, max -90% Volume Change, max -5% 3.7 FINISHED PART Specific requirements for physical properties of finished parts, when required, shall be specified on engineering drawing.
