DONGIL R&C

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The Principles of Anti Vibration Mountings

The Principles of Anti Vibration Mountings

The Principle of Anti Vibration Mountings Anti vibration mountings minimise the level of vibration transmitted from an oscillatory system to its surroundings. Alternatively the mounts can be used to protect fragile equipment from external vibrations. The amplitude of vibration of the oscillatory system itself does not decrease and must therefore be able to move with the vibration. Generally…

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The advantages and disadvantages of EPDM sheeting

The advantages and disadvantages of EPDM sheeting

EPDM rubber (Ethylene Propylene Diene Monomer [M-class]) is an elastomer characterised by a wide range of applications. The ‘M’ refers to its classification in ASTM standard D-1418 and the ‘M-class’ includes rubbers having a saturated chain of the polymethylene type. Applications suitable for EPDM EPDM rubber is used in seals, o-rings, glass-run channels, radiators, garden and appliance hose,…

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Snowplow Buyer’s Guide

Whether you only need to plow your own driveway or are planning to take care of multiple drives and parking lots, a snowplow can help you get the job done quickly and efficiently. There are plows fit for jobs of all sizes and can fit a large range of vehicles. That said, there are many things to consider before putting money down for a snowplow. Before talking to a dealer, take a look at these…

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Grinding Mill Liners

INTRODUCTION Grinding mills are commonly used for crushing ores. A typical grinding mill comprises a large rotatable drum containing grinding media (typically steel balls or rods). The grinding mill liners are integral parts of a grinding mill. Today, liner designs and materials used in their construction have evolved to a point where virtually maintenance free liner life is ensured. Generally…

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Choosing the right type of marine rubber fender

Choosing the right type of marine rubber fender

The main aim of installing marine rubber fender is to protect both the vessel and the dock from major failure during the berthing period. External forces, such as abrasion or other natural factors can possibly occur during the berthing process. Therefore, marine rubber fenders are made to solve this problem, and therefore, more money can be saved due to less vessel or dock fixing. Rubber fenders…

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What’s the Difference Between Silicone and EPDM?

What’s the Difference Between Silicone and EPDM?

Silicone and EPDM (Ethylene Propylene Diene Monomers) are types of rubber that share some truly unique features and uses. Despite this, there are notable differences between them in terms of their properties, which is something to consider when you are choosing between the two. But Is Silicone better than EPDM? Let’s start with an overview of each, then find out. EPDM – Ethylene Propylene Diene…

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Physical Properties of Rubber – a Buyer and Designer’s Guide

Physical Properties of Rubber – a Buyer and Designer’s Guide

Introduction The rubber materials selected by designers and technical buyers should meet all their application requirements. The inherent physical characteristics of elastomers can be modified through compounding. However, the knowledge of rubber’s physical propertiesand their measurement is critical for compound selection. The following are the physical properties of rubber: Specific gravity…

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What is a Rubber Sheet and How is it Made? When you are driving back home today or walking around the city, take a look around. You might notice a construction site for that new mall or a street sweeper making its way down the bustling roads.

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The advantages of rubber dam

The advantages of rubber dam

  The advantages of rubber dam   Rubber dam divided into water filling type and inflatable rubber dam two kinds.The dam filling line longer than inflatable dam filling. In terms of cost, two kinds of dam types are similar. Rubber dam using similar to lock condition, compared with the conventional sites have the following features : One is the low cost.30% ~ 70% can reduce the investment, can save…

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The advantages of rubber dam

The advantages of rubber dam

  The advantages of rubber dam   Rubber dam divided into water filling type and inflatable rubber dam two kinds.The dam filling line longer than inflatable dam filling. In terms of cost, two kinds of dam types are similar. Rubber dam using similar to lock condition, compared with the conventional sites have the following features : One is the low cost.30% ~ 70% can reduce the investment, can save…

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Bridge Design: Elastomeric Bearing Pads and their Role

Bridge Design: Elastomeric Bearing Pads and their Role

Over seven kilometers long, the San Francisco-Oakland Bay Bridge was constructed with around 250 million kilograms of steel and accommodates over a quarter of a million vehicles per day. If each vehicle is assumed to have a mass of 1800 kg, then the Bay Bridge must support a mass of 450 million kg of vehicles per day. For those of us who have crossed a major bridge such as the Bay Bridge, the…

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What are Marine Fenders?

What are Marine Fenders?

Marine fenders are a type of marine equipment that are used to prevent boats, ships and other naval vessels from colliding against each other or against docks, wharves and piers. In other words marine fenders can be simply termed as a marine bumper. Marine fenders are important marine equipment as they prevent loss to the body of a boat or a ship. The fender systems that are used in naval vessels…

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Dongil R&C / Gate Seal

Dongil R&C / Gate Seal

Gate Seal  It means the material or device for preventing leakage, which is installed in side and bottom of gate or top when gate is submerged in water. It requires high property of abrasion resistance, recovery, ozone resistance and weather resistance. Purpose : dam, gate, lock, canal, ship and gate seal for mixer facility P type rubber : It is usually used for gate packing and it is widely…

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Dongil R&C / Rubber Fender

Dongil R&C / Rubber Fender

Rubber Fender It is used to protect ship or harbor facility by absorbing impact and conflict generated when ship comes alongside harbor or moors with elastic transformation of rubber. Purpose : harbor, pier, ship, loading yard, dock, etc. Rubber Fender OV CV TV SV SM BP CY System Fender DR TTV Floating Fender Pneumatic , Foam Folled Fender Ship Fenders BC D

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Dongil R&C / about fender

Dongil R&C / about fender

From Wikipedia, the free encyclopedia Fender protecting the side of a sailing vessel as it heads into port In boating, a fender is a bumper used to absorb the kinetic energy of a boat or vessel berthing against a jetty, quay wall or other vessel. Fenders are used to prevent damage to boats, vessels and berthing structures. To do this, fenders usually have high energy absorption and low reaction…

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Dongil R&C - about company

Dongil R&C – about company

About company Dngil R&C Co., Ltd. Was established in July, 1995. The company has been specialized in the design and development processes of rubber fender and other rubber products. Since then, our company has studied, developed and manufactured general industrial products together with other rubber products for construction and civil engineering among various fields. We strongly believe that it…

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Rubber packing

It means the material applied to vessel connecting side, in which liquid or air is tightened, or to the area, through which the axis for connection, revolution or reciprocating motion passes. If is applied to the area without motion, it is called gasket. Depending on structure pressure, temperature and motion of sealing place such as window packing, filter press packing and facility gasket, filling materials are various