1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 13 N-STATUS Replaced by ESH-M2D190-B2 C. Mracna, NA 2004 07 13 Revised Para 3.0 inserted; para 3.8, 3.10 & 4 deleted 1969 01 31 Released CAX3-PF604642-E Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page
2、 1 of 2 SEAL, RADIATOR CAP - NBR ESE-M2D190-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a heat, water and engine coolant resistant nitrile butadiene rubber. 2. APPLICATION This specification was released originally for material used as a seal on the radiato
3、r cap. 3. REQUIREMENTS Slab stock and items marked* on gaskets. 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 *Hardness, Durometer “A“ 50 -
4、 65 (ASTM D 2240) Tensile Strength, min 2000 psi (ASTM D 412 Die “C“) (13.8 MPa) Elongation, min 450% (ASTM D 412) 3.2 HEAT AGED (ASTM D 865, 70 h at 121 C) *Hardness, Durometer “A“ Change, max +8 Tensile Strength Change, max -15% Elongation Change, max -35% 3.3 IMMERSION IN ASTM OIL NO. 1 (ASTM D 4
5、71, 168 h at 149 C) *Hardness, Durometer “A“ Change 0 to +10 Tensile Strength Change, max -40% Elongation Change, max -50% *Volume Change +5 to -10% ENGINEERING MATERIAL SPECIFICATIONESE-M2D190-A Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.4 IMMERSION
6、IN ASTM OIL NO. 3 (ASTM D 471, 168 h at 149 C) *Hardness, Durometer “A“ Change 0 to -20 Tensile Strength Change, max -35% Elongation Change, max -40% *Volume Change 0 to +20% 3.5 COMPRESSION SET, max 30% (ASTM D 395, Method “B“, 70 h at 121 C) 3.6 COLD FLEXIBILITY AT -40 C (FLTM BP 106-03, 5 h condi
7、tioning, bend around a temperature conditioned 1 in (25 mm) mandrel) 3.6.1 As Received No cracks 3.6.2 After Heat Aging per para 3.2 No cracks 3.7 IMMERSION IN COOLANT (FLTM BP 8-5, 168 h) Solution Composition: ESE-M97B18-C 49.5% Water 49.5% ESE-M7C32-A 1.0% *Hardness, Durometer “A“ Change 0 to -10 Tensile Strength Change, max -20% Elongation Change, max -35% *Volume Change 0 to +20%
