Ningbo Bandak Industrial Co., Ltd.

OIL SEAL OPTIMAL FLUID SEALING PERFORMANCE Oil Seal normally consists of three basic components: the rubber sealing element, the metal insert (case) and the garter spring. The purpose of the sealing element is to stop the fluid from leaking between the shaft and housing. The metal insert will give rigidity and strength to the seal while it is being held in the bore or recessed groove. The garter spring will help make the rubber sealing element more effective. In precision bearings, oil seal helps prevent lubricants from escaping the bearings or a specific area. In machine components, oil seal helps prevent abrasives, corrosive moisture and other harmful contaminants from entering machinery. It also helps stop mixture of two different mediums, such as lubricating oil and water. TYPES Twenty different types of oil seals on a white background. The diagram of oil seal types COMMON SPECIFICATIONS ASTM/DIN ISO NBR ACM VMQ (Silicone) FKM HNBR (NEM) PTFE Wear Resistance very good moderate moderate very good moderate good High Temperature Oil Resistance 100 °C 150 °C 180 °C 200 °C (max. 150 °C operate temperature) 150 °C (max. 140 °C operate temperature) 200 °C Low Temperature -40 °C -30 °C -50 °C -25 °C -40 °C -80 °C Oil Resistance good good moderate very good good extremely good Common Specifications of Oil Seal (Click for details) FEATURES Provides good low temperature resistant capability Low swelling in hydrocarbon fluids High sealing performance by optimum Lightweight, compact and energy-saving Compatibility with the fluid contacted High degree of elasticity Wear resistance Low friction coefficient Exact fit Durable Best in quality CLASSICAL APPLICATIONS Automotive equipment Manufacturing Off-highway Oil refineries Power transmission Gearboxes Hydraulic cylinders. High voltage equipment Construction Medical and aerospace Chemical processing Pulp and paper Oil and refining Food and beverage Water and waste water Oil seal diagram installed on automotive equipment on a white background. Applied in automotive equipment The blue oil seals are mounted on the hydraulic cylinder on a white background. Applied in hydraulic cylinder A power transmission with the oil seal component is on the gray background

ALL-RUBBER V SEAL USED ON THE SHAFTS V seal is a solid all-rubber seal. The function of V seal is to exclude dust, dirt, water, oil splash or other aggressive contaminants from entering into the bearing housing while retaining grease. V seal is used on shafts. It works by stretching over the shaft to create a tight seal along the shaft while the flexible lip seals lightly against the counterface at a right angle to the shaft. In addition, V seal acts as flinger, since it rotates with the shaft and causes the lip to rotate against the housing or bearing. And as the speed increases, friction decreases due to centripetal force. What' more, V seal can be utilized as either a primary or backup seal and perform an excellent sealing job. AVAILABLE TYPES V seal has four available types, namely VA, VS, VE and VL. A black VA seal on the white background. VA SEAL Due to perpendicular rear face, intermediate cross-section and wide ranges of diameters, VA seal is the most popular V seal design. A black VS seal on the white background. VS SEAL Widely body tapered cross section provides higher radial force for high speed shafts. A black VE seal on the white background.

The basic properties of selected materials Material Hardness(HB) Temperature(íµ) Soft iron 90 530 Carbon Steel 120 530 304(L)íó321íó316(L) 160 750 5Cr1/2Mo 130 500.

The basic properties of selected materials Material hardness(hb) temperature Soft iron 90 530 Carbon steel 120 530 304(l)íó321íó316(l) 160 750 5cr1/2mo 130 500.

Features Specifications: Main properties : Properties unit Result Apparent density g/cm3 2.10-2.30 Tensile strength(min) MPa 18 Ultimate elongation(min) % 230. Applications:- Insulating cover for conductor, pipe for corrosive fluids.

QAP can supply gaskets of all types - metal layer, metal-elastomer and metal-soft material - individually matched to the requirements of each particular engine.Cylinder-head gaskets have a crucial role to play in the advancement of engine technology, particularly with respect to high-performance diesel engines and petrol engines with direct injection. In an internal combustion engine, a head gasket provides the seal between the engine block and cylinder head(s). Its purpose is to seal the combustion gases within the cylinders and to avoid coolant or engine oil leaking into the cylinders. Leaks in the head gasket can cause poor engine running and/or overheating. We are specialists in the design and manufacture of high performance cylinder head gaskets, sealings for the automotive engines..Our company production goods cater for cars, motorcycles trucks and stationary engines, with most of our focus on high performance and vintage/veteran cars. Although we regularly produce our products for John Deere, Mercedes-Benz, BMW, Audi, Volkswagen, Ford, Volvo ,Toyota,Honda,Mazda,Nissan,Hyundai,Kia and so on., we can cater for any make of engine. So whether your need is for commonly-produced gaskets, or something completely out of the ordinary, we can help you. We also list some items OE number we have developed and sealing in the markets as follows: 026103383K 11141A78B01-00 032103383N 10169200 26191PT 12611196 55562233 11621732969 18407530606 ME013536 35852 1107400 028129589B 14040100 056103609B 14024000 11214-20030 1L2Z6584AA 11213-20020 11213-0H010 12637683

Since its establishment in 1993, Dongsuh Industry Co., Ltd. has specialized in manufacturing SEALING products for power generation facilities in Korea. In particular, as we manufacture SEALING products, which are mostly used in critical power generation equipment systems, we value quality stability and develop excellent technical skills. The reliability of quality has been verified by acquiring 'Q', the highest level of safety of qualified suppliers, including ISO 9001 and 14001, and the five leading power companies under the Korea Electric Power Corp. have various quality certificates. We are also conducting R&D to continuously improve quality, improve working environment, and develop new products. Based on these efforts, we have won awards for excellent suppliers to major power generation companies in Korea and expanded our production lines by steadily increasing sales. We are now trying to move beyond the domestic market to the global market. SPIRAL WOUND GASKETOutstanding capability for high temperature and high pressure Automatic flexibility and recovery from the change of temperature, pressure, vibration and working conditionsEfficient production for any type of dimensions such as round or oval type, etc.Outstanding sealing capability as it is produced according to the pressure of unbalanced flange. Hoop and Filler materials can be selected according to special operating conditions. GRAPHITE MOLD PACKING â?¢ Graphite Tape Packing is the packing that compressed and molded in a certain dimension for easy installation. â?¢ The graphite's self-lubrication capability and low coefficient of friction allow to use in a wide range without giving damage on the reciprocating and rotary shaft. â?¢ If you want to disassemble only gland without disassembling pump and valve, you can just cut it and deliver. â?¢ You can get better sealing effects if you use with ALS910C, ALS900G and ALS955W depending on the use purpose. RING JOINT GASKET Ring joint gasket is a type of pressure energized gasket used on pipe flanges, pressure vessels, Valve bonnets handling, high pressure steam, gas, hot oil, solvent vapor at high temperature. DONGSUHs experienced technology offers many different types so that customers may select the most suitable one in accordance with operating conditions. MECHANICAL PACKING (VARIOUS MODELS DEPENDING ON CONDITON) PTFE V-PACKING SPRING ENERGIZED SEAL