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Understanding seal and gasket material options

Developing the right compound (material) is a crucial step in the seal and gasket design process.

A compound “recipe” must be developed to enhance or add to an elastomer’s inherent physical and chemical characteristics, and to ensure efficient molding or extruding.

Lauren customizes the seal and gasket material for your application.It is important that a material is further developed to meet any necessary industrial specifications, such as UL, ASTM, SAE, FDA, NSF International and U.S. Military Standards.

Once a final recipe has been determined, the specific time, temperature and order of ingredient addition are critical in mixing compound batches that repeatedly meet desired specifications.

Since conditions for each recipe vary, it is important to have mixing equipment that is versatile and equipped with features that maintain complete repeatability control from batch to batch.

2018 Design Guide CoverDiscover more opportunities to optimize seal and gasket design by downloading our Design Guide.  

Download Our Design Guide

Lauren’s extensive knowledge of material mixing ensures you receive a reliable supply of high quality seals and gaskets.

Our expertise in material science is advanced through Cooper Standard Industrial and Specialty Group's material expertise, our
in-house silicone mixing facility and our R&D department with full laboratory testing capabilities.

 We help you select the appropriate seal material for your application based on the following properties:

Physical Properties:
• Tensile strength and elongation*
• Hardness range (dense), or compression
deflection requirements (sponge)
• Compression set at room and operating
temperatures
• UV, ozone, heat, storage requirements
• Color (if color matching is desired
or necessary)
• Aesthetics

Mechanical Properties:
• Speed of recovery from deflection
• Flexibility
• Permeability to gases

Chemical Resistance Properties:
• Resistance to acids or caustics
• Hydrocarbon solvents
• Oxygenated solvents
• Flame or temperature extremes
• Tear
• Abrasion