Advantages of Lathe Cut Gaskets
The lathe cut process allows Grand River to provide customers a number of advantages over injection molding and die cutting. With lathe cut, there is little or no tooling costs, smaller orders, the ability to make design changes easily, and rapid prototyping can be done in just one week, all with our in-house engineering support team.
Bevel cut gaskets are used in high performance sealing applications where the demanding requirements justify a higher cost compared to a square cut. Our capabilities include both single and double bevel cuts on both inside and outside sealing surfaces.
Additional Advantages
- No mold flash, pits, voids or non-fills
- Maximum sealing surface compared to standard o-rings
- No hourglassing vs. die-cut products
- Lower product cost due to elimination of waste inherent to other processes
- Limitless material choices
- Tight dimensional tolerances possible
- Flexible scheduling accommodates short lead times
- Smooth surface finish without parting line or flash
- Guaranteed parallel cut surfaces

Quality is Our #1 Value
Grand River Rubber & Plastics utilizes a Statistical Process Control (SPC) program called Infinity QS throughout the lathe cut process. The program allows our staff to measure the wall thickness to the specification and also is used in the finishing step of our process to measure the cut size of the gaskets.
Grand River also utilizes a Microview Units Vision System that integrates with our SPC program.. This unique program can measure Internal diameter (ID), outside diameter (OD), and wall thickness, all documented in our capability reports. This integral quality system can measure down to one ten thousandths of an inch.
Our customers approve production designs and processes before, during, and after manufacture.We use a Production Part Approval Process (PPAP) to communicate at each of these critical steps as we manufacture to your exact specifications. And, our lot-control system insures full traceability from raw materials to final inspection. Through continuous quality improvement we are able to respond with innovative refinements to produce superior products.

Our Certifications
Grand River Rubber uses a continuous improvement process from production to safety. We maintain the latest certifications and trainings, providing our customers with great quality.
- ISO 9001-2015 certified
- Recognized on the Interstate Milk Shippers (IMS) Certified Manufacturers List of Single Service Products
- NSF/ANSI Standard 61 Drinking Water Systems Certified Lathe Cut Gaskets