1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions Rev 02 2012 04 12 N Status No replacement or usage N. Benipal, NA 1978 08 30 Metricated, Renumbered & Retyped PCR RD782440-F2 1964 03 10 Released CP5-438002 Page 1 of 2 GASKET, CELLULOSE FIBER/NITRILE BUTADI
2、ENE RUBBER ESW-M8G7-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE: The material defined by this specification is a nitrile butadiene rubber impregnated cellulosic fiber gasket material of good quality and uniform composition. 2. APPLICATION: This specification was released originally for material used as
3、 a gasket for automatic transmission extensions. 3. REQUIREMENTS: 3.1 COMPRESSIBILITY, max 15 % (ASTM F 36, 0.5 in (13 mm) diameter penetrator, 25 psi (172 kPa) preload, 1000 psi (6.9 MPa) major load) Recovery, min 50 % 3.2 TENSILE STRENGTH, min (ASTM F 39, 1 x 5 in (25 x 125 mm) samples) WMD 12 000
4、 psi (83 MPa) AMD 4500 psi (31 MPa) 3.3 IMMERSION IN LIQUIDS (ASTM D 471, 5 h at 149 C) Immersion Thickness Tensile Strength Fluid Change Compressibility, max Change, max ASTM Oil No. 1 -8 to 0 % - - ESW-M2C33-D -4 to 0 % 15 % AMD: -9 % WMD: -17 % 3.4 COMPRESSION SET, max 10.5 % (ASTM D 395, Method
5、A“, 70 h at 102 +/- 3 C) 3.5 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. ENGINEERING MATERIAL SPECIFICATION ESW-
6、M8G7-A Page 2 of 2 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.
