SAE AMS 3352B pdf download
SAE AMS 3352B pdf download.Silicone Rubber,Fiberglass Fabric Reinforced.
1.1 Form:
This specification covers a fiberglass reinforced silicone rubber in the form of sheet, strip, and molded parts.
1 .2 Application:
These products have been used typically for grommets or anti-chafing cushions between metal surfaces operating at temperatures between .55 to +290 DC (67 to +554 °F), with occasional short time exposure to 315 °C (599 °F), but usage is not limited to such applications. Each application should be considered individually.
1.3 Safety-Hazardous Materials:
While the matenals. methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary pi-ecautionary measures to ensure the heaLth and safety of all personnel involved.
2. APPLICABLE DOCUMENTS:
The issue of the following documents in effect on the date of the purchase order form a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply.
4.3 Sampling and Testing:
Shall be as follows:
4.3.1 For Acceptance Tests: Sufficient product shall be taken at random from each lot to perform all required tests: the number of determinations for each requirement shall be as specified in the applicable test procedure or, if not specified therein, not less than three.
4,3.1.1 A lot shall be all product produced from the same batch of compound processed in one continuous run and presented for manufacturer’s inspection at one time.
4.3.1.2 A statistical sampling plan, acceptable to purchaser. may be used in lieu of sampling as in 4.3.1.
4.3.2 For Preproduction Tests: Shall be acceptable to purchaser or as stated in the contract.
4.4 Approval:
4.4.1 Sample product shall be approved by purchaser before product for production use is suppfied, unless such approval is waived by purchaser. Results of tests on production product shall be essentially equivalent to those on the approved sample. Production product made by a revised procedure shall not be shipped prior to receipt of reapproval. If necessary to make any change in parameters for the process control factors, manufacturer shall submit for reapproval a statement of the proposed changes in ingredients and/or processing and, when requested. sample product.
4.4.2 Manufacturer of the product shall make no significant change in material, processes. or control factors from those on which the approval was based. unless the change is approved by the cognizant engineering organization. A significant change is one which, in the judgment of the cognizant engineering organization, could affect the properties or performance of the product.
4.4.2.1 Control factors for producing products include, but are not limited to, the following:
Compound ingredients and proportions thereof within established limits
Sequence of mixing compound ingredients
Type of mixing equipment
Method and equipment for preparing preforms
Basic molding procedure (compression, transfer, injection)
Curing time and pressure; variations of ±10% are permissible
Finishing methods
Methods of inspection.
4.4.2.2 Any of the above process control factors for which parameters are considered proprietary by the manufacturer may be assigned a code designation. Each variation in such parameters shall be assigned a modified code designation.
