1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 09 15 Activated A. Latado Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 2 SEALER, SILICONE RUBBER WSS-M4G368-A1 1. SCOPE The material defined by this specification is a one-component thixotropic s
2、preadable silicone rubber based adhesive/sealant. This material is rapidly cured when exposed to air moisture to form a resistant rubber. 2. APPLICATION This specification was released originally for sealing the drip rail to roof ditch. Note: Care must be exercised to avoid contaminating paint or ot
3、her silicone-sensitive manufacturing operations. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements for Production Materials (WSS-M99P1111-A). 3.2 COLOR Black 3.3 SOLIDS, min 93% (ASTM D 2834, at
4、 150C for 3h) 3.4 SPECIFIC GRAVITY (post cure) 1.1 1.2 (ASTM D 792, Method A) 3.5 FLOW, max 5.0 mm (ASTM D 2202) 3.6 TACK FREE TIME, max 45 minutes (MIL-S-8802F) 3.7 EXTRUSION RATE 300 700 g/minutes (MIL-S-8802D) 3.8 PEEL STRENGTH, min 25 N/cm (ASTM D 903) 3.9 TENSILE STRENGTH, min 1.4 MPa (ASTM D 4
5、12, material thickness 2 mm, 72 h at 25 +/- 2C and relative humidity 50 +/- 5%) 3.10 ELONGATION, min 510% (ASTM D 412) ENGINEERING MATERIAL SPECIFICATIONWSS-M4G368-A1 Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 2 3.11 TEAR STRENGTH, min 8 kN/m (ASTM D 624,
6、 material thickness 2 mm, 72 h at 25 +/- 2C and relative humidity 50 +/- 5%) 3.12 HEAT AGING (1000 h at 80 +/- 2C) 3.12.1 Tensile Strength, min 1.6 MPa (ASTM D 412) 3.12.2 Elongation, min 380% (ASTM D 412) 3.12.3 Tear Strength, min 9.2 kN/m (ASTM D 624) 3.13 QUALITY Shall be a smooth, homogeneous mixture, free from foreign materials and properties detrimental to normal production operations. 3.14 STORAGE STABILITY (From date of receipt at Ford Motor Company) Minimum 6 months when stored in sealed, unopened drums out of direct sunlight at ambient temperatures.
