About Us

R&R History

original-logojohn-ransomthaddius-randolphBarber ChairsFounded in 1872 by John R. B. Ransom, R&R originally provided supplies, instruments and furniture for barbers, doctors and dentists.

In 1876, Thaddius R. Randolph became a partner and the business was incorporated as The Ransom & Randolph Co. in 1892.


In the 1900s, R&R’s primary business focus changed as we developed many revolutionary products for dental, industrial, jewelry and ceramic shell investment casting applications. These products included investment for casting gold dental inlays; the first vacuum casting appliance; industrial solid mold investments for World War II production; the first high temperature, water-based investment for ferrous metals; Ultra-Vest® investment for jewelry casting; Primcote® binder, the first ready-mixed, high performance primary binder; and Deluxcote® concentrate, the first coat-reducing, fiber-based backup binder.

In 1964, R&R was purchased by Dentsply Sirona (NASDAQ: XRAY), an industry-leading supplier of innovative dental products and technology, and began operating as a wholly owned subsidiary of Dentsply Sirona. At this time, we began distributing ceramic shell binders and refractories.

R&R is a proud member of the following organizations:

R&R Today

RR Logo
Today, R&R’s core businesses are composed of:

Ceramic Shell Investment Casting
Industrial Mold Investment Casting
Jewelry Investment Casting
Dental Investment Casting

R&R is the only supplier to the investment casting industry dedicated to these four core investment casting applications.

R&R believes in promoting value through a solutions-based approach. We are strongly committed to partnering directly with you to identify your process hurdles, casting objectives and company goals. Our team consults with you to customize a precise solution tailored specifically to fit your foundry’s needs. We provide customers with innovative, high quality products and exceptional technical service and customer support.

R&R Operating Principles

At R&R, we pride ourselves on insisting that total quality be the guiding principle of our business. We aim to be market and customer driven and directed; while consistently providing customers with innovative products and services and linking our technological capabilities with the needs of new and existing markets.