C.E. Conover & Co., Inc.: Rubbers That Won’t Fail You

Founded in 1947, C.E. Conover & Co. specializes in the development of sealing products and rubber chemical compounds used in mission critical, high reliability applications. Charlie E. Conover began as a one man operation supplying O-ring seals to the aerospace market. Eventually incorporated in the 1950s as a distributor, the company established relationships with many prominent companies – including Grumman, Sikorsky, and Hamilton-Standard. The company was one of the first to offer spiral backup rings utilizing Teflon® instead of leather. In the 1960s, the company began to manufacture its own house brand sealing products. One of its earliest innovations was the Revonoc® product line – featuring a device, the Con-o-hex®, which had a unique hexagonal cross section elastomer fitted to a sealing cap. Used for some of the most notable aircraft during this period (including Lockheed C130, Boeing 747, Republic F105, and the Polaris), the company also provided seals for the Grumman Lunar Excursionary Module to the moon. During the 1970s and 1980s, the company became involved with a variety of notable defense-related endeavors, including the production projects of the Sikorsky CH53, S60 Blackhawk, Grumman F-14, McDonnell Douglas F-18, Trident submarines, Poseidon missiles, General Dynamics’ F-16, and British Aerospace’s BAE 146. With both oil resistant and non-oil resistant compounds, C.E. Conover creates materials and sealing products to suit the aviation industry’s every need. The company is also expanding its reach into more diverse markets such as the commercial and space industries. C.E. Conover & Co. has supplied NASA and the Mitsubishi Heavy Industries’ Japanese Experiment Module with sealing products. The company is now focusing on expanding their product portfolio with activities including: producing liquid and gaseous chlorine seal compounds for water purification applications and compounds for carbon dioxide sealing on fire extinguishers. Based in Bensalem, Pennsylvania, the company is compliant to ISO 9001: 2000 and AS 9100. The company offers products within the following categories: seals, elastomers, and plastics. Their classic O-rings are available in multiple sizes and materials and have optional PTFE encapsulation (for low chemical resistance without contamination). Other seal products offered include: Rev-O-slide (a combination between the O-ring and Revonoc T), Cap Seal-Rev-O-Cap (for hydraulic and pneumatic pressure machinery to address spiral failure and low temperature leakage), spliced rings (non-standard O-rings), Wiper-Scraper seals (a dust barrier seal with military specification in Mil-H-83282 and Mil-H-5606, these seals can withstand 60 degree Fahrenheit to 225 degree Fahrenheit), and Sandwich seals (two backup rings for anti-extrusion applications which can operate at up to 8,000 psi). The company offers the following elastomers: FKM fluorocarbon, FVMQ (fluorosilicone), FFKM (perfluoroelastomer), silicone (in MQ, PMQ, VMQ, PVMQ, and SI), EPDM (ethylene/propylene), neoprene, NBR/Buna N and NHBR (nitriles), butyle, and polyeurethane (in millable, cast, or AU-EU). Their range of plastics includes: Revonoc (the company’s original proprietary PTFE base plastic), PTFE (polytetrafluroethylene), PAE (torlon), PVC (polyvinyle chloride), and nylon.


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