Custom Engineered O-RingsENA Advanced Rubber Technologies has been producing o-rings for over 30 years. Although we are a value-added supplier of stock off-the-shelf AS568B size o-rings, producing tens of millions parts annually, our true core competency and specialization is in the production of hard-to-produce custom engineered o-ring products. This may include difficult to produce sizes (large and small), or o-rings made from highly complex rubber formulations. In addition, we are very good at providing secondary services such as Teflon coatings or providing "two-color" rings.

ENA maintains highly advanced machinery and equipment for secondary operations to o-rings and Quality Control including Cryogenic Nitrogen De-Flashing and Stone Tumbling machines. Cryogenic de-flashing machines are automatic, high speed machines used to remove excess flashing from o-rings and other rubber parts. Stone tumbling is an advanced process that provides for an ultra smooth surface finish of o-ring and other rubber parts.

There are hundreds, if not thousands, of manufacturers and suppliers of o-rings worldwide. It is very easy for a company to purchase a low cost press, source low cost rubber material and a tool and start making low-cost o-rings. However, ENA Advanced Rubber Technologies is far more than such a company. We have more advanced capabilities which reflect our commitment to quality and custom engineered o-ring parts. If your application is critical, you can rest assure ENA is going to supply you with the highest quality and consistent o-ring parts - time after time. If you are having problems with an existing part or supplier, please call us and we will help you find a reliable solution. This is our guarantee.

(Note: See O-Ring Chart under "Technical Info" for stock o-ring sizes and dimensions)

Insert Tool ENA maintains highly advanced presses and molding machines capable of producing very small o-rings in high volumes to very large o-ring (up to 4' in diameter) in short to medium runs. ENA's specialty is hard-to-produce custom 0-rings and o-rings with secondary operations (i.e. Teflon coating, striping, etc.)
Diaphragms China O-Ring production area at ENA China factory.
Inspect Viton 2010-12-08 Workers in o-ring trimming and de-flashing department work on special run of Viton and red Silicone 0-rings.

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Inspect 100% ENA performs 100% visual inspection of every o-ring produced at our factories for defects. O-rings are also pulled from production lines by Quality Control engineers for more detailed random testing in our QC labs in compliance with our ISO and TS certifications. ENA implements special Quality Assurance initiatives set forth by specific request of the customers as well.
Inspect Silicone Specialty 0-rings being examined (Silicone with groove)
Custom Engineered O-rings No matter how small the o-ring or how many parts are produced, every 0-ring will undergo 100% visual quality inspection. ENA averages 200 workers per factory that perform QA inspections of all parts.

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DOSS Automatic Inspection Machine DOSS Automatic Inspection Machines are utilized at all ENA factories for inspection of o-rings - our machines can inspect and provide data on up to 30,000 o-rings per hour.
Doss Report 2010-12-08 Typical Quality Inspection report produced by Automatic DOSS Inspection Machine. This machine checks for critical dimensions, surface contaminants or defects, and many other quality features of the final product.
O-Ring Microscope ENA Quality Control Engineers systematically and randomly pull o-rings from production floor and take to QC lab for detailed inspection. Here, QC technician reviews large o-ring under high-powered microscope. This data is recording and documented in compliance with ISO and TS requirements, ENA policies and customer requests in many instances.

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