1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 25 N-STATUS No Replacement Named C. Mracna, NA 2004 08 24 Revised Para 3.0 inserted; para 3.2, 3.3, 3.4 & 4 deleted 1984 05 09 Released 891038P Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 2 N
2、ITRILE BUTADIENE RUBBER, OIL SEAL - AUTOMATIC ESP-M2D336-A TRANSMISSION - HIGH SWELLING - HIGH TEMPERATURE SERVICE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a high temperature, bound anti-oxidant nitrile butadiene rubber, having high swelling characteristic
3、s in automatic transmission fluids. 2. APPLICATION This specification was released originally for material used for static oil seals in automatic transmissions. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Stand
4、ard Requirements For Production Materials (WSS-M99P1111-A). 3.1 SLAB STOCK 3.1.1 Original Properties Hardness, Durometer A 70 - 80 (ASTM D 2240) Tensile Strength, min 10 MPa (ASTM D 412) Elongation, min 300% (ASTM D 412) 3.1.2 Heat Aged (ASTM D 865, 70 h at 150 +/- 2 C) Hardness, Durometer A Change,
5、 max 0 to +10 Tensile Strength Change, max -25% Elongation Change, max -30% 3.1.3 Immersion in ASTM #1 Oil (ASTM D 471, Aluminum Block, 70 h at 150 +/- 2 C) Hardness, Durometer A Change 0 to -20 Tensile Strength Change, max -20% Elongation Change, max -30% Volume Change +2 to +10% ENGINEERING MATERI
6、AL SPECIFICATIONESP-M2D336-APrinted copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.1.4 Immersion in ASTM #3 Oil (ASTM D 471, Aluminum Block, 70 h at 150 +/- 2 C) Hardness, Durometer A Change -10 to -35 Tensile Strength Change, max -35% Elongation Change, max -20%
7、 Volume Change +30 to +50% 3.1.5 Immersion in Three Currently Approved Automatic Transmission Fluids 1/ (ASTM D 471, Aluminum Block, 168 h at 150 +/- 2 C) Hardness, Durometer A Change -10 to -30 Volume Change +20 to +40% 1/For information on currently approved automatic transmission fluids contact: Transmission and Axle Engineering 36200 Plymouth Road Livonia, Michigan 48150 Attn: Supervisor, Materials, Fasteners & Friction Engrg. 3.1.6 Compression Set, max 40% (ASTM D 395, Method B, plied, 22 h at 150 +/- 2 C)
