1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 09 16 Revised Para 3.0 inserted; para 5 revised; 3.1, 3.2,3.3, 3.10, 3.11 NE01E10000474067 E.J. Duda1989 05 01 Released NE01-E-10000474-041 E. J. DudaPrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of
2、4 FLUOROELASTOMER (FKM), HIGH TEMPERATURE WSE-M2D391-A2 ROTATING SHAFT OIL SEAL 1. SCOPE The material defined by this specification is a high heat and oil resistant fluoroelastomer rubber. 2. APPLICATION This specification was released originally for material used for rotating shaft oil seals in eng
3、ines. 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). 3.4 SLAB STOCK 3.4.1 Preparation of Test Specimens All tests are to be performed on specimens d
4、ie-cut from the molded test sheets manufactured from the same material and with equivalent cure to production parts. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.4.2 Density 1.95 - 2.01 g/cm3(ISO 1183, Method A/ASTM D 297) 3.4.3 Hardness, International 65
5、 - 75 (ISO 48/ASTM D 1415) 3.4.4 Hardness, Durometer A 70 - 80 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Hand held durometers shall not be used) 3.4.5 Tensile Strength, min 10 MPa (ISO 37/ASTM D 412, Die C) 3.4.6 Elongation at Break, min 275% (Test Method according to para 3.4.5) 3.4.7
6、 Modulus at 100% Elongation, min 2.75 MPa (Test Method according to para 3.4.5) 3.4.8 Tear Strength, min 7.5 kN/m (ISO 34, Method B, Procedure A, ASTM D 624, Die C) ENGINEERING MATERIAL SPECIFICATIONWSE-M2D391-A2Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of
7、4 3.4.9 Brittleness Point, max -10 C (ISO 812, Type B specimen, ASTM D 2137, Method A) 3.4.10 Ozone Resistance, max Rating 0 (FLTM BP 101-01, Procedure A) 3.4.11 Compression Set, max 55% (ISO 815/ASTM D 395, Method B, except 25% compression, plied-up Type 1 specimens, 70 h at 150 +/- 2 C) 3.5 HEAT A
8、GED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) 3.5.1 Hardness, Durometer A Change -1 to +5 3.5.2 Tensile Strength Change -5 to +25% 3.5.3 Elongation Change -30 to +5% 3.5.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.6 HEAT AGED (ISO
9、188/ASTM D 573, 150 +/0 50 air changes/h, 1,000 h at 150 +/-2 C) 3.6.1 Hardness, Durometer A Change -1 to +5 3.6.2 Tensile Strength Change -5 to +12% 3.6.3 Elongation Change -42 to +5% 3.6.4 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.7 IMMERSION IN OIL NO. 1
10、(ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.7.1 Hardness, Durometer A Change -2 to +8 3.7.2 Tensile Strength Change -2 to +10% 3.7.3 Elongation Change -24 to +5% 3.7.4 Volume Change -2 to +4% 3.7.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. ENGINEERING MATERI
11、AL SPECIFICATIONWSE-M2D391-A2Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 4 3.8 IMMERSION IN OIL NO. 3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) 3.8.1 Hardness, Durometer A Change -5 to +2 3.8.2 Tensile Strength Change -8 to +4% 3.8.3 Elongation Change -3
12、5 to +5% 3.8.4 Volume Change 0 to +8% 3.8.5 Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.9 FINISHED PARTS 3.9.1 Hardness 65 - 75 (ISO 48, micro/ASTM D 1415, micro) Test Method: Prepare and mount specimens according to FLTM BP 106-04. The hardness shall be measu
13、red between sealing lip edge and spring groove. For each aging test 3 seals are to be cut into two equal parts in an axial direction, one half part shall be aged and on the other half part the original hardness shall be measured. The average of three hardness measurements on different specimens shal
14、l be taken on each half part and be reported. The original and the changed hardness shall be measured on one and the same part. 3.9.2 Heat Aged (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 150 +/- 2 C) Hardness Change -1 to +5 Visual Evaluation No surface tackiness or cracks when folded f
15、lat against itself. 3.9.3 Immersion in Oil No. 1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -2 to +8 Volume Change -3 to +4% Test Method: 0.5 g minimum weight, multiple specimens allowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.9.4 Immersi
16、on in Oil No. 3 (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C) Hardness Change -7 to 0 Volume Change 0 to +8% ENGINEERING MATERIAL SPECIFICATIONWSE-M2D391-A2Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 4 of 4 Test Method: 0.5 g minimum weight, multiple specimens al
17、lowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.9.5 Immersion in Currently Released Engine Oil (ISO 1817/ASTM D 471, 168 h at 150 +/- 2 C, see para 5.1) Hardness Change, max tbd Volume Change, max tbd Test Method: 0.5 g minimum weight, multiple specimens al
18、lowed. Visual Evaluation No surface tackiness or cracks when folded flat against itself. 3.9.6 Density 1.95 - 2.01 g/cm3(ASTM D 297) 3.9.7 Tensile Permanent Set, max 20% (FLTM BP 116-01, 6% for rear seals 10% for front seals, 22 +/- 2 h at 150 +/- 2 C) % Set = d3-d1 / d2-d1 x 100 d1 = inside diamete
19、r, original d2 = inside diameter, elongated state d3 = inside diameter, after test 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 For information on currently approved service fluids and other mat
20、erials required for use in this specification contact: Materials Laboratory 13/100 Fluids Materials Section Research and Engineering Centre Engine Oils Ford Motor Company Ltd Engine Engineering Laindon, Basildon Ford Motor Company Essex SS15 6EE, England PO Box 2053 Dearborn, MI 48121, USA Materials Engineering Product Engineering Office Ford Motor Co. of Australia Ltd Princes Highway, Norlane Victoria 3214, Australia
