1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Para No. Revisions Rev 03 2012 04 12 N Status No replacement or usage N. Benipal, NA 1982 10 12 3.1, 3.2, 3.3, 3.4 Revised CE3M-RD863100-E 58 1980 11 20 Released CE3KRD-863100-E Supp. #1 Page 1 of 2 GASKET, CELLULOSE FIBER -
2、 NITRILE BUTADIENE RUBBER ESE-M8G157-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE: The material defined by this specification is a highly compressible gasket material consisting of cellulose fibers and a suitably compounded nitrile butadiene rubber. 2. APPLICATION: This specification was released origin
3、ally for material used in the oil filler cap gasket. It is recommended for applications to seal oil and water where low flange loads are encountered. 3. REQUIREMENTS: All tests shall be conducted in accordance with ASTM F 104, Type 3 material, unless otherwise specified. 3.1 ORIGINAL PROPERTIES 3.1.
4、1 Density 35 - 46 lb/ft3 (560 - 737 kg/m3) 3.1.2 Tensile Strength, min 325 psi (2.2 MPa) 3.1.3 Flexibility, F5 Must pass 3.1.4 Compressibility and Recovery (ASTM F 36, Procedure “B“) Load, psi (MPa) . 1000 (6.9) 40 - 52% . Recovery, min 25% 3.1.5 Compression Set, max 60% (ASTM D 395, Method “A“, 70
5、h at 100 C) 3.2 OVEN AGED (168 h at 121 C) Tensile Strength, min 325 psi (2.2 MPa) Compressibility at 400 psi 10 to 30% Recovery, min 35% ENGINEERING MATERIAL SPECIFICATION ESE-M8G157-A Page 2 of 2 3.3 IMMERSION ASTM Oil No. 1 (168 h at 121 C) Specimen shall be buffed to 0.125 +/- 0.005 in (3.18 +/-
6、 0.13 mm) if sample sheets or parts exceed this thickness. Weight Change 0 to +95% Tensile Strength Change 0 to -40% Compressibility at 400 psi 30 to 45% Recovery, min 35% 3.4 IMMERSION IN ASTM Oil No. 3 (168 h at 121 C) Specimen shall be buffed to 0.125 +/- 0.005 in (3.18 +/- 0.13 mm) if sample she
7、ets or parts exceed this thickness. Weight Change 0 to +140% Tensile Strength Change 0 to -60% Compressibility at 400 psi 30 to 50% Recovery, min 15% 3.5 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL ANALYSIS Ford Motor Company, at its option, may conduct infrared and/or thermal analysis of material/par
8、ts supplied to this specification. The curves established for initial approval shall constitute the reference standard and shall be kept on file at Central Laboratory. All samples shall produce curves that correspond to the reference standard when tested under the same conditions as those specified
9、on the master curve. 3.6 SUPPLIERS RESPONSIBILITY Material supplied to this specification must be equivalent to that originally approved. Changes in formulation or processing shall not be made without prior approval as described in Supplier Procedure I-A. 4. APPROVAL OF SUPPLIERS: Suppliers to this specification must be approved by the affected product engineering office. Procedure for gaining approval of a specific material to a new/existing ES-M specification is contained in Supplier Procedure I-A. Approved new suppliers will be added to the Engineering Materials Approved Source List.
