Product Development

ELASTOMERIC MATERIAL SELECTION GUIDE

The following information is provided as a starting point in the process of selecting an appropriate elastomeric material for specific applications. This
information has been collected from various sources and is believed to be reliable, however, no warranty to its accuracy or completeness is implied or
expressed. The final determination of the suitability of a material to an application is the sole responsibility of the user. Northwest Rubber Extruders, Inc. or
its employees assume no responsibility or liability.

In order to select an elastomeric material for a specific application, the following questions should be considered:
WHAT ARE THE SERVICE CONDITIONS THAT THE PRODUCT WILL ENCOUNTER?

• Movement - Either static or dynamic
• Fluid / Chemical Contact - Including any
  additives or possible contaminants
• Temperature Range - Minimum and
  maximum in operation
• Pressure Range - Minimum and maximum
  in operation
• Compression / Deflection / Torsion
• Vacuum Application - Applied & cyclic
WHAT ARE THE DESIGN
REQUIREMENTS?

• Dimensions - Critical and applied
  tolerances
• Configuration - Special shape for a
  specific use or application
• Description / Function - Seal, gasket,
  insulator, cushion, etc.
• Expected / Desired Service Life
• Manufacturing / Assembly
  considerations - Affect on product
• Regulatory Considerations
WHAT ARE THE QUALITY REQUIREMENTS?

• Material Specifications - SAE, ASTM, MiL, ZZ-R-765
• Material Qualification - Actual testing or compounded
  to meet
• Lot Sampling vs. 100% inspection
• Color or Visual requirements
• Acceptable Quality Level
• Inspection Criteria
• Test Reports or Certification Requirements
• Trim Level - Required detail to meet visual &
  functional requirements
• Test Slab or Specimen Requirements