1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 06 29 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.6 & 4 deleted 1998 03 16 Activated C. Thomas Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 3 FLUOROELASTOMER, OIL SEAL, VALVE STEM, HIGH WSS-
2、M2D53-B3 HEAT, IMPROVED OIL AND ABRASION RESISTANCE 1. SCOPE The material defined by this specification is an abrasion resistant, high heat and oil resistant fluoroelastomer. 2. APPLICATION This specification was released originally for material used as valve stem oil seals in automotive engines whe
3、re long seal life and resistance to high detergent engine oils is required. 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 SPECIMENS
4、3.4.1 Preparation of Test Specimens All tests are to be carried out on slab specimens (ASTM D 3182) 1.9 +/- 0.1 mm thick, manufactured from the same material and under equivalent cure conditions as for production parts. Specimens must be protected from moisture and tested as soon as possible after r
5、emoval from the protective container. 3.4.2 Original Properties Hardness, Durometer A 75 - 85 Points (ISO 868/ASTM D 2240) Tensile Strength, min 9.5 MPa (ISO 37/ASTM D 412, Die C) Elongation, min 150% (ISO 37/ASTM D 412, Die C) 100% Modulus, min 6.2 MPa (ISO 37/ASTM D 412, Die C) Tear Strength, min
6、39 kN/m (ISO 34/ASTM D 624, Die B) Compression Set, max 35% (ISO 815/ASTM D 395, Method B, 70 h at +/- 1C) ENGINEERING MATERIAL SPECIFICATIONWSS-M2D53-B3Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 3 3.4.3 Heat Aged (ISO 188/ASTM D 573, 168 h at 200 +/- 1 C
7、) Hardness, Change, max + 3 Points Tensile Strength Change -5 to + 15% Elongation Change, max -25% 100% Modulus Change, max -20% 180 Bend Test No cracks (Bent completely flat against itself) 3.4.4 Immersion in ASTM Oil #1 (ISO 1817/ASTM D 471, 168 h at 150 +/- 1 C, Aluminum Block) Hardness Change -4
8、 to + 1 Points Tensile Strength Change -5 to + 15% Elongation Change -20 to + 10% 180 Bend Test No cracks (Bent completely flat against itself) Volume Change -3 to + 4% 3.4.5 Immersion in ASTM IRM 903 Reference Oil (ISO 1817/ASTM D 471, 168 h at 150 +/- 1 C, Aluminum Block) Hardness Change -6 to 0 P
9、oints Tensile Strength Change -15 to + 10% Elongation change -20 to + 10% 180 Bend Test No cracks (Bent completely flat against itself) Volume Change 0 to + 5% 3.4.6 Low Temperature Retraction -17 +/- 2 C (ASTM D 1326, TR 10) 3.5 FINISHED PARTS 3.5.1 Original Hardness, degrees 65 - 77 IRHD (ISO 48/A
10、STM D 1415) 3.5.2 Heat Aged (ISO 188/ASTM D 573, 168 h at 200 +/- 1 C) Hardness Change, max + 7 IRHD ENGINEERING MATERIAL SPECIFICATIONWSS-M2D53-B3Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 3 3.5.3 Immersion in ASTM Oil #1 (ISO 1817/ASTM D 471, 168 h at 1
11、50 +/- 1 C) Hardness Change -2 to + 5 IRHD 180 Bend Test No cracks (Bent completely flat against itself) Volume Change* 0 to + 3% 3.5.4 Immersion in ASTM IRM 903 Reference Oil (ISO 1817/ASTM D 471, 168 h at 150 +/- 1 C) Hardness Change -8 to 0 IRHD 180 Bend Test No cracks (Bent completely flat again
12、st itself) Volume Change* 0 to + 10% 3.5.5 Adhesion No adhesive bond line failure (Rubber to Metal) (cohesive rubber failure only) Test Method: Strip approximately 3 mm of rubber from the metal by using a sharp knife and pull rubber tab at a 90 angle. *The weight of seal stock for Volume Change determination shall be 0.4 g, min. 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 RECYCLING CODE FKM
