Molded Rubber Products
Serving the World Since 1944

Rubber Compression Molding of Valve Seals for the Fire
Protection Industry

Rubber Plugs and Isolators
Rubber Plugs and Isolators

Since 1944, Mid-States Rubber has been a leader in the field of custom molded rubber and plastic products serving the appliance, automotive, material handling, fitness, and other heavy industries.

The project highlighted here was a valve seal for use in the fire protection industry. Our expert team helped the customer design the product, and advanced equipment was used for compression molding and rubber to metal bonding. The part was composed of ethylene propylene diene monomer (EPDM) rubber. It featured dimensions of 285.8 mm in length, 263.2 mm in width, with a tightest tolerance of RMA A3. All work was done to the highest quality and met customer specifications and Rubber Manufacturing Association standards. The project represents a total run of 5,000 pieces, delivered in four weeks.

To see how we can provide you with comprehensive solutions to critical manufacturing issues on your next project, see the table below or contact us directly.

rubber compression molding of Valve Seals Specifications:

Product Description
Valve Seals
Capabilities Applied/Processes
  • Design Consultation
  • Compression Molding
  • Rubber to Metal Bonding
Product Dimensions
Length: 285.8 mm
Width: 263.2 mm
Tightest Tolerances
Material Used
70 Durometer Shore A EPDM Rubber Polymer
Special Features
Rubber Bonded to Metal
Industry for Use
Fire Protection
Delivery/Turnaround Time
4 Weeks
Delivery Location
East Coast
Standards Met
  • Customer Specifications
  • Rubber Manufacturing Association
  • 2-D CAD models ( Auto Desk and Unigraphics)
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