1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Para No. Revisions Rev 02 2012 04 12 N Status No usage or replacement N. Benipal, NA 1978 10 03 Metricated, Renumbered & Retyped CF4J-RD572213-6 1964 03 17 Released CR16-RD438021 Page 1 of 2 GASKET, PAPER/NEOPRENE ESW-M8G40-
2、A NOT TO BE USED FOR NEW DESIGN 1. SCOPE: The material defined by this specification is a latex impregnated paper containing 40 percent neoprene. It is recommended for oil and gasoline seals where the flange pressure available is low. It is easily compressed under low torque to make a non-porous sea
3、l. 2. APPLICATION: This specification was released originally for material used as brake backing plate inner and outer gaskets of the rear axle. 3. REQUIREMENTS: (Slab stock and/or finished gaskets) All tests shall be conducted in accordance with ASTM F 104, Type 3 materials, unless otherwise specif
4、ied. 3.1 TENSILE STRENGTH, min 1000 psi (6.9 MPa) 3.2 COMPRESSIBILITY 35 - 45% (ASTM F 36, 1000 psi (6.9 MPa) load) Recovery, min 35% 3.3 COMPRESSION SET, max 50% (ASTM D 395, Method “A“, plied to 1/2 in (13 mm) thickness, 22 h at 70 C) 3.4 IMMERSION IN LIQUIDS (22 h at 23 +/- 2 C) Weight Thickness
5、Immersion Fluid Change, max Change, max ASTM Reference Fuel “B“ 85% 15% ASTM Oil No. 3 100% 15% Distilled Water 80% 25% 3.5 DENSITY, min 35 lb/ft3 (560 kg/m3) (ASTM F 104, same as type 2 material) 3.6 SUPPLIERS RESPONSIBILITY Material supplied to this specification must be equivalent to that origina
6、lly approved. Changes in formulation or processing shall not be made without prior approval as described in Supplier Procedure I-A. ENGINEERING MATERIAL SPECIFICATION ESW-M8G40-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.
