INTERN MPAPS L-6039 PDF

This specification covers the general requirements, identification, inspection, property and performance requirements, quality plan, and source approval and quality control requirements for these TSR compounds.

Rubber Compound Designation - Description

The TSR compounds covered in this specification may include several different types of polymer base, such as EPDM, NR, CSM, NBR, etc. Within each of these basic polymer groups, several different blends and curing treatments are available, and unless otherwise specified, may be used to provide the specified hardness and other material properties required for the part. A specific polymer may be specified within the material designation for the part. Upon approval of the prototype and/or PPAP samples, no changes in the polymer base, blend, curing treatment, or other processing variables shall be made without the approval of Materials Engineering and the Quality Department of the receiving plant.

TSR Prefix

All rubber molding compounds provided to the requirements of this specification shall be designated with the TSR prefix. A specific polymer may or may not be specified in the material designation. These materials may contain recycled rubber (post-consumer recycled material, such as automotive tires) with prior Engineering approval. If industrial recyclate (pre-consumer recycled material) is included in the TSR compound, it shall be reported separately from the post-consumer recycled content.

APPLICATION

This specification covers thermoset rubber (TSR) molding compounds used in truck applications. These TSR compounds are generally molded or extruded and may contain recycled materials. For thermoplastic elastomers (TPR/TPE/TPU), see MPAPS L-6040.

Note: Mount properties are listed in Table 8 some sections of which are in a restricted issue appendix, MPAPS L-6039-R. Contact Materials Engineering (referenced in Section 8.0) for further information.

Restricted Chemical Substances

All product supplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification.