1、 ENGINEERING MATERIAL SPECIFICATIONMaterial Name Specification NumberDate Action Changes1989 01 04 NE01E10000474036 Color Deleted1988-10-31 NE01E10000474028 3.8 Add Total Si Vol E. J. Duda 10-28-8883-03-11 Released CE3M RD863100-E68WP 3948-a Page 1 of 3 SEALANT, SILICONE RUBBER - HEAT RESISTANT ESE-
2、M4G195-C1. SCOPEThe material defined by this specification is a one-component thixotropicspreadable silicone rubber based adhesive/sealant. It is capable of beingpumped, metered and distributed into a gasket profile. It curesprogressively inward from the surface at room temperature absorbing waterva
3、por in the air as the curing activator. After vulcanization is complete,the tough rubbery solid is odorless.2. APPLICATIONThis specification was released originally for material having general usessuch as formed-in-place gaskets. To obtain good bonds, the surface shouldbe properly solvent cleaned to
4、 remove dirt and grease, and some difficultsurfaces may require a primer. Engine applications are formed-in-place oilpan and rocker arm cover gaskets, or other applications where highoperating temperatures up to 204 C may be encountered.3. REQUIREMENTS3.1 INFRARED SPECTROPHOTOMETRY AND/OR THERMAL AN
5、ALYSISFord Motor Company, at its option, may conduct infrared and/orthermal analysis of material/parts supplied to this specification.The IR spectra and thermograms established for initial approval shallconstitute the reference standard and shall be kept on file at thedesignated material laboratory.
6、 All samples shall produce IR spectraand thermograms that correspond to the reference standard when testedunder the same conditions.3.2 The curing system covered by this specification is the methoxy curesystem.3.3 SPECIFIC GRAVITY 1.05 +/- .01(ASTM D 792, Method “A“)3.4 EXTRUSION RATETime to dispens
7、e 50 g through a 3.2 mm dia. 1000 +/- 500 sorifice at 448 kPa air pressure.(Test method to be on file at Materials Engineering Activity)NOT TO BE USED FOR NEW DESIGN2014 N Status No replacement L. Sinclair, NAENGINEERING MATERIAL SPECIFICATIONESE-M4G195-CWP 3948-b Page 2 of 3 3.5 OPEN TIME (WORK LIF
8、E)A 6 mm diameter bead sh all be tack free in 1 h max at 23 +/- 2 C and50 +/- 5% R.H.3.6 HIGH TEMPERATURE RESISTANCE Soft, flexible andtightly adheringTest Method: Apply a 6 mm diameter bead of material to a strip ofaluminum foil. Cure for 24 h at 23 +/- 2 C and 50 +/- 5 % R.H. Heatin an air circula
9、ting oven and hold for 24 h at 204 +/- 6 C. Cool toroom temperature and examine.3.7 TOTAL SILICONE VOLATILE, max 0.6%(FLTM AV 102-1, D4 thru D10 + L4 thru L10)3.8 QUALITYShall be a smooth homogeneous mixture, free from foreign materialsand properties detrimental to normal production application. It
10、shallnot con tain particles or solid spots of sufficient size to causeblockage of a 508 micrometre diameter orifice.3.9 ADDITIONAL REQUIREMENTSSpecific requirements as required by the application shall bespecified on engineering drawing and/or engineering partspecification.3.10 STATISTICAL PROCESSSu
11、pplie rs must conform to the requirements of Ford Quality SystemStand ard Q-101. A mutually acceptable Control Plan as describedtherein is required for material/source approval. Appropriatestatist ical tools must be used to analyze process/product data sothat variation in the final product is contin
12、uously reduced.3.11 SUPPLIERS RESPONSIBILITYAll materials supplied to this specification must be equivalent inal l characteristics to the material upon which approval wasoriginally granted.Pri or to making any change in the properties, composition,constr uction, color, processing or labeling of the
13、materialorig inally approved under this specification, whether or not suchchange s affect the materials ability to meet the specificationrequir ements, the Supplier shall notify Purchasing, Toxicology andthe affected Materials Engineering activity of the proposed changesand obtain the written approv
14、al of the Materials Engineeringactivity. Test data, t est samples and a new code identification areto be submitted with the request.ENGINEERING MATERIAL SPECIFICATIONESE-M4G195-CWP 3948-b Page 3 of 3 Substance restrictions imposed by law, regulations or Ford, apply tothe materials addressed by this
15、document. The restrictions aredefined in Engineering Material Specification WS S-M99P9999-A1, unlessa different suffix (e.g., A2 or A3) is specified on the engineeringdocument for the application.4. APPROVAL OF MATERIALSMat erials defined by this specification must have prior approval by theresponsi
16、ble Materials Engineeri ng activity. Suppliers desiring approval ofthe ir materials shall first obtain an expression of interest from theaffec ted Purchasing, Design and Materials Engineering activity. Uponrequest, the Supplier shall submit to the affected Materials Engineeringactivity its own labor
17、atory rep ort to the specification (test results, notnominal values), the material designation and code number, and testspecim ens for Ford evaluation. Upon approval, the material will be addedto the Engineering Material Approved Source List.5. GENERAL INFORMATIONThe information given below is provi
18、ded for clarification and assistancein meeting the requirements of this specification.This material is packaged in cartridges, pails, or drums . Shelf life of themat erial is approximatley 1 year with storage recommended below 32 C,however, refrigeration is not required.Contai ners should always be
19、kept sealed when not in use. After opening, aplu g of cured material may form across the container opening duringstorage. This may easily be removed and does not affect the remainingcontents.The material is thixotropic and should not flow, slump o r sag under its ownweight even when applied to vertical or overhead surfaces.
