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Custom Injection Molding of Thermoplastic Rubber Seals, Gaskets, Bellows & Valves

At ASPEC, we manufacture a variety of injection molded thermoplastic rubber components for the security, electrical, and electronic industries. Injection molding offers an efficient alternative to heated compression molding which is a significantly more laborious process. Injection molding in performed on a 40 ton Arburg injection molding machine with a shot capacity of 2.5 oz. Additionally, parts are fully cured in the mold, injection molded thermoplastic rubber components can be designed with undercuts, providing greater design freedom and reducing the need for complex molds.

Molded components similar to the Santoprene parts shown here can be manufactured in a number of custom rubber colors and in a range of Shore A hardnesses from 35A to 87A. We produce the seals, gaskets, bellows, and valves shown here, in a number of variations, with a total production volume of approximately 300,000 to 400,000 parts per year. These parts are produced for a customer in Lexington, Kentucky, with tolerances as tight as ±0.005" to ensure a precise compression fit. The molded parts are polished and machined using EDM equipment to achieve a fine surface.

The lead time for injection molding tooling averages 2 to 6 weeks, with production times quoted on a job by job basis. For additional details regarding this project and our ability to mold thermoplastic rubber products, see the table below, or contact us directly.

Injection Molding of Thermoplastic Rubber Seals, Gaskets, Bellows & Valves
Injection Molding of Thermoplastic Rubber Seals, Gaskets, Bellows & Valves

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Custom Injection Molded Thermoplastic of Rubber Seals, Gaskets, Bellows & Valves Project Highlights

Product Description
Seals, Gaskets, Bellows, Valves
Capabilities Applied / Processes
Plastic Injection Molding
Injection Molding Machine
Arburg
40 Ton Clamp / 2-1/2 ounce Shot
Material
Santoprene Thermoplastic Rubber
Hardness Shore A
35A, 45A, 55A, 64A, 73A, 80A, 87A
Color
Black and Custom Colors
Finish
Polished and EDM Machined Mold Finish
Tolerance
+/- 0.005 in.
Overall Part Dimensions
.250 in. x .500 in. to 4.00 in. to 7.00 in.
Wall Thickness .030 in. to .500 in.
Industries Served
Security, Electrical, Electronic
Volume
300,000 to 400,000 parts per Year
Delivery / Time
2 to 6 weeks for Mold Production
Delivery / Location
Lexington, Kentucky

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