O Ring History

O Ring History The first patent for the O-ring, is dated May 12, 1896 as a Swedish patent. J O Lundberg  the inventor of the O-ring, received the patent. The US patent  for the O-ring was filed in 1937 by a then 72-year-old Danish born machinist,  Niels Christensen. Soon after emigrating to the USA in 1891, he patented…

O Rings

Global nitrile butadiene rubber market set for rapid growth

Market News Global nitrile butadiene rubber market set for rapid growth, to reach around £346 million by 2020 according to a new research report. Nitrile-butadiene rubber is a complex family of various butadiene monomers and unsaturated copolymers. Its chemical and physical properties vary based on the polymer’s composition of nitrile. This form of synthetic rubber is…

Oil Seals

Oil Seals (rotary shaft seals) are available in metric and imperial sizes. The primary function of an oil seal is to protect and enhance the lifespan of bearing systems by retaining lubricants thereby reducing friction. It is possible to offer various sizes ranging from 6mm to 1000mm on the ID. The standard oil seal will…

For Water and Wastewater Pumps

Because mechanical shaft seal failures are the number one cause of pump downtime, it was decided to dedicate this  to mechanical seal basics. Years ago, most pump shafts were sealed using rings of soft packing, compressed by a packing gland, but this type of shaft seal required a fair amount of leakage just to lubricate…

Mechanical Seals

Main elements of a mechanical seals All mechanical seals are constructed with the following basic sets of parts: A set of (very flat) machined and lapped primary sealing faces: The very close (near) contact between these two flat mating surfaces, which are perpendicular to the shaft, minimizes leakage. Dissimilar materials are usually used for the…

Rotary seals for abrasive, corrosive applications

Rotary seals for abrasive, corrosive applications   Rotary seals will never displace mechanical seals and conventional compression packing in all process applications. However, Gerry Morgansenior engineer Garlock Sealing Technologies argues they offer a better option in abrasive and corrosive environments. The process industries rely on numerous pumps to perform reliably to maintain plant productivity. To…

CPI DEMANDS PUMPS WITH LOWER LIFECYCLE COSTS

Mechanical Seals enhanced plans result in release free, solid, longer-enduring pumps Since pumps move media through reactors, valves and channeling, they serve as “the heart” of any procedure in which they are put. Along these lines, whether the pump is a huge sump pump, a little metering pump or anything in the middle of, processors…

Specifying O-rings for increased life and reliability

Years of experience have been captured in a plethora of O-rings design standards and a wealth of materials is readily available to suit most application requirements. Mick Holland describes how to take advantage of these standards to mitigate risk when specifying O-rings into your fluid sealing system. Within the O-ring industry, size references are often…