1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 12 N-STATUS Moving to HNBR. No Replacement Named C. Mracna, NA 2004 06 29 Revised Para 3.0 inserted; para 3.3 & 4 deleted 1964 02 05 Released P5-649 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 o
2、f 3 OIL SEAL, NITRILE BUTADIENE RUBBER - ESW-M2D100-A AUTOMOTIVE TRANSMISSION - HIGH TEMPERATURE SERVICE NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a nitrile butadiene rubber (NBR) adaptable to high temperature service conditions. 2. APPLICATION This specifi
3、cation was released originally for material used for oil seals in automotive transmissions and hydraulic systems of cars, trucks and tractors. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements F
4、or Production Materials (WSS-M99P1111-A). 3.1 SLAB STOCK 3.1.1 Original Properties Tensile Strength, min 1,500 psi (ASTM D 412) (10.3 MPa) Elongation, min 250% (ASTM D 412) Hardness, Durometer “A“ 65 - 70 (ASTM D 2240) 3.1.2 Immersion in ASTM Oil #1 (ASTM D 471, aluminum block, 168 h at 150 +/- 2 C)
5、 Tensile Strength Change, max -20% Elongation Change, max -60% Volume Change -6 to 0% Volume change to be determined on typical seals in addition to slab stock from same batch of material. Hardness, Durometer “A“ Change +/- 10 180 Bend Test No cracks (Bend completely flat against itself) ENGINEERING
6、 MATERIAL SPECIFICATIONESW-M2D100-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 3.1.3 Immersion in ASTM Oil #3 (ASTM D 471, aluminum block, 168 h at 150 +/- 2 C) Tensile Strength Change, max -30% Elongation Change, max -40% Volume Change +12 to +19% Volu
7、me change to be determined on typical seals in addition to slab stock from same batch of material. Hardness, Durometer “A“ Change, max -20 180 Bend Test No cracks (Bend completely flat against itself) 3.1.4 Heat Aged (ASTM D 865, aluminum block, 70 h at 125 +/- 2 C) Tensile Strength Change, max -15%
8、 Elongation Change, max -35% Hardness, Durometer “A“ Change, max +10 180 C Bend Test No cracks (Bend completely flat against itself) 3.1.5 Immersion in Automatic Transmission Fluid, ESP-M2C138-CJ (ASTM D 471, aluminum block, 168 h at 150 +/- 2 C) Tensile Strength Change, max -55% Elongation Change,
9、max -65% Volume Change 0 to +10% Hardness, Durometer “A“ Change +/- 10 180 Bend Test No cracks (Bend completely flat against itself) 3.1.6 Cold Test at -34 C No cracks (FLTM BP 106-03) Test Method: Condition samples prior to cold test, per following 4 methods: . Normal (as received) . Immerse sample
10、s in ASTM Oil #1 at 150 +/- 2 C for 168 h. . Immerse sample in ASTM Oil #3 at 150 +/- 2 C for 168 h. . Immerse samples in each approved automatic transmission fluid, ESP-M2C138-CJ at 150 +/- 2 C for 168 h. ENGINEERING MATERIAL SPECIFICATIONESW-M2D100-A Printed copies are uncontrolled Copyright 2009,
11、 Ford Global Technologies, LLC Page 3 of 3 After conditioning, insert samples in “bent loop“ test fixture and place in cold chamber at -34 +/- 2 C for 5 h prior to flexing. 3.1.7 Compression Set, max 35% (ASTM D 395, Method B, 70 h at 125 +/- 2 C) 3.2 OIL SEALS (PRODUCTION SHIPMENTS) 3.2.1 Immersion
12、 in ASTM Oil #1 (ASTM D 471, aluminum block, 168 h at 150 +/- 2 C) Volume Change* -6 to 0% 180 Bend Test No cracks (Bend completely flat against itself) 3.2.2 Immersion in ASTM Oil #3 (ASTM D 471, aluminum block, 168 h at 150 +/- 2 C) Volume Change* 12 to 19% 180 Bend Test No cracks (Bend completely flat against itself) *The weight of seal stock for volume change determination shall be 0.4 g minimum. In some instances this will require several small seals to be used as the test specimen.
