Lathe Cut Electrical Transformer Gaskets for Power Transmission & Electrical Utilities

At Ames Rubber Manufacturing, we are capable of producing precision seals in a wide range of types and sizes. The gaskets shown here are used in electrical transformers by a customer in the power transmission industry. The high grade nitrile rubber material is mixed in our compounding department to meet all customer specifications. The nitrile material was chosen for this application as a result of its resistance to transmission oil and long service life.

The custom mixed rubber is then extruded and cut to various sizes on our precision lathes. With multiple lathes and ring cutting machines, we are able to accommodate high volumes and a large product mix very efficiently. We produce numerous gasket sizes for this customer, with an outer diameter as small as 1.00" and up to 15.00". Large sizes are manufactured using transfer presses rather than lathe cutting equipment and compression molding methods are used to accommodate shorter run volumes. By employing multiple manufacturing processes, all quality specifications can be met while holding costs to a minimum. Precision tolerances are held in accordance with RMA standards.

After the gaskets are manufactured, they are boxed, palletized, and wrapped for shipment. These products are shipped to the customer based on a JIT shipping schedule that is met using a kanban inventory management system. The average turnaround for this type of product is four weeks, but by utilizing the kanban system, inventory is readily available as needed. For additional information about this custom rubber gasket manufacturing project, see the table below, or contact us directly.

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Electrical Transformer Gaskets Project Highlights

Project Name
Electrical Transformer Gaskets
Project Description
Various Lathe Cut seals for electrical transmission and distribution equipment used by utilities and by commercial and industrial companies worldwide.
Capabilities Applied/Processes
Precision Lathe Cutting
Extrusion and Pole Curing
Equipment Used to Manufacture Part
Mitchell Precision Lathe Cutters
Scholin Precision Ring Cutters
Precision Grinders
Hot & Cold Feed Extruders
Steam Autoclave System
Transfer Presses for Large Diameter Tubes
Compression Presses for Close Tolerance and Short Runs
Overall Part Dimensions
From .25" ID x 1.00" OD, to 12.0" x 15.0" OD
Tightest Tolerances
Rubber Manufacturing Association (RMA) Precision Tolerances
Material Used
High Grade Nitrile Rubber (Transformer Oil Resistant)
Material Finish
Poled Finish on ID and Ground Finish on OD
Industry for Use
Power Transmission and Electrical Utilities
In Process Testing/Inspection Performed
Materials are tested to pass a transformer oil immersion requirement
High Volume, Multiple Sizes
Boxed and Pallet Wrapped
Delivery/Turnaround Time
4 weeks or sooner after receipt of order
Delivery Location
Southeastern USA
Standards Met
Industry Standard Gasket Specification – Transformer Use

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