Offers to Sell

5 Panel Hat Unstructured Custom Snapback Caps with Your Own Logo

Minimum Order: 10 long tons

In hydraulic equipment and industrial automation systems, the stability of the entire system depends on various factors. However, there is one component that requires low investment and is easy to replace—this is the UN-type rod seal we are going to explore today. What is a UN Seal? UN seal (also known as a U-cup or U-type seal) is a versatile sealing component that can be installed on either piston rods or pistons. It features a distinctive “U” shaped profile, with both the inner and outer sealing lips specifically designed to optimize sealing performance in rod and piston applications. Material Selection and Structural Advantages To meet diverse sealing demands across different working conditions, DEDE offers this series in two material options: Polyurethane (PU) and Fluororubber (FKM). PU Material: Often referred to as the “fifth engineering plastic,” polyurethane combines the elasticity of rubber with the durability of plastic. It offers excellent wear resistance, tear strength, and chemical stability. Even under high-frequency motion and low compression set conditions, it maintains reliable sealing performance. With an operating temperature range of -20°C to +120°C, PU seals are well-suited for variable outdoor and industrial environments. FKM Material: Known for its exceptional resistance to high temperatures and oils, FKM is ideal for harsh chemical environments and high-temperature, high- pressure conditions. It is particularly suitable for high-vacuum systems, oil- filled systems, or applications requiring stringent media compatibility—such as hydraulic pumps and turbine sealing systems. Key Features and Application Adaptability The UN-type rod seal series offers the following advantages: High compatibility with both dynamic and static sealing in medium to high- pressure hydraulic systems; Precision lip design ensures low friction and stable oil return; Automatically enhances sealing performance as pressure increases, preventing leakage; Can be used in conjunction with dust wipers to significantly extend system lifespan. Thanks to these advantages, UN-type rod seals have become vital components in ensuring long-term operational stability across a wide range of equipment, including industrial hydraulic cylinders, automotive hydraulic power steering systems, electromechanical arms, and agricultural machinery hydraulic systems. Application Industries Construction Machinery: Hydraulic cylinder sealing systems in excavators, bulldozers, etc.; Automation Equipment: Sealing control at actuator ends in robots and mechanical arms; Industrial Equipment: Hydraulic presses, punching machines, CNC machinery; Automotive Industry: Rod seals used in power steering and transmission systems; Energy Equipment: Hydraulic regulation systems in wind power installations. By continuously optimizing material selection and refining manufacturing processes, DEDE has ensured that the UN series offers outstanding durability and low maintenance costs. DEDE's Service and Technical Support With over 30 years of manufacturing experience, DEDE is a well-established sealing systems provider with its own production facilities and a global supply and service network spanning more than 80 countries. Our key service strengths include: Fast delivery of standard parts: Covering tens of thousands of specifications to quickly meet customer demands; Customized sealing solutions: End-to-end services from structural design and material formulation to on-site testing; Sealing performance optimization: An experienced engineering team helps customers reduce maintenance frequency and extend service life. Additionally, DEDE is recognized as a provincial-level "Specialized and Innovative" enterprise and a national high-tech enterprise, making it a benchmark brand in intelligent manufacturing and technological innovation within the sealing industry. Why Choose DEDE’s UN Seal Series? Though small in size, sealing components are critical to the stable operation of systems. In high-frequency motion, high-pressure circuits, and harsh chemical environments, DEDE’s UN seal series delivers outstanding performance and versatile applicability—offering solid protection for reliable equipment operation. We don’t just sell seals—we deliver dependable sealing solutions. If you’re facing complex sealing challenges, feel free to contact us for technical advice or customized solutions.

Minimum Order: 500

Seals play a crucial role in hydraulic systems. U-shaped seals made of polyurethane (PU) and fluororubber (FKM) perform particularly well in high- intensity environments, such as those found in construction machinery, motors, and industrial robots. Why choose polyurethane (PU) and fluororubber (FKM)? Polyurethane is known in the industry as the "fifth plastic" because it combines the properties of both plastic and rubber. Honestly, traditional rubber often quickly breaks down in acidic and alkaline environments or when exposed to organic solvents, while PU offers far greater resistance. Its elasticity and toughness prevent deformation and aging even after extended use, ensuring a stable seal. Fluororubber is highly chemically stable, offering resistance to high temperatures, oils, high vacuum, acids, alkalis, and a variety of chemicals. It also boasts relatively good media resistance among elastomers. NQKSF is U-shaped piston seal series, designed specifically for hydraulic systems, can withstand temperature fluctuations from -20°C to 250°C, making it suitable for a variety of complex environments. More importantly, as oil pressure increases, its sealing force automatically strengthens, significantly reducing leakage. Application Scenarios and Industry Demands Speaking of their applications, U-shaped piston seals are used across a wide range of industries. Industrial machinery, especially pumps and hydraulic cylinders, places stringent demands on seals. Seals in motors, gearboxes, and engines also require both high-pressure and wear resistance. Agricultural and construction machinery often operate in harsh environments, making U-shaped seals' corrosion resistance and compression resistance an excellent choice. Of course, industries like water treatment, wind power generation, and the chemical industry also place extremely high demands on seal stability and durability. NQKSF has accumulated extensive experience in the sealing field over many years, exporting its products to over 80 countries and earning widespread recognition. NQKSF is Service Advantages NQKSF is backed by a physical factory and over 30 years of manufacturing experience. We offer a comprehensive inventory of O-rings and oil seals, enabling us to quickly respond to urgent customer needs. NQKSF offers comprehensive, customized services, from material selection and structural design to testing, to address sealing challenges in diverse operating conditions. Our technical team helps customers optimize sealing performance, reducing equipment maintenance costs and extending service life. Long-term customers report that NQKSF is products are stable and reliable, with excellent after- sales service. U-type piston seals, particularly NQKSF is, are a wise choice for many industry customers seeking to improve equipment stability and operational efficiency. While small, these seals are crucial to the health of the entire system. Whether in high-pressure hydraulic systems or harsh industrial environments, U- type piston seals demonstrate their unique advantages. For more details, please contact us or leave us a message, and we'll promptly respond.

Minimum Order: 500

Nominal capacity:2000mAh Maximum charging voltage: 4.20V Discharge termination voltage: 2.75V Maximum charging current: ≤4A Maximum continuous discharge current: 10C Discharge temperature: -20℃~60℃ Internal resistance: ≤18mΩ Key Features of 18650 Li-Ion Battery  High Energy Density: Offers a high energy-to-weight ratio, providing substantial power in a compact size. Long Cycle Life: Capable of hundreds to thousands of charge/discharge cycles, ensuring durability and cost-effectiveness over time. Stable Voltage: Delivers a consistent voltage output, which is crucial for the reliable operation of electronic devices. Low Self-Discharge: Maintains its charge over long periods when not in use, making it ideal for standby applications. High Discharge Rate: Supports high discharge currents, suitable for demanding applications. Lightweight: Its lightweight nature makes it suitable for portable applications where weight is a critical factor.

The Lithium Iron Phosphate Battery refers to the lithium-ion battery with LiFePo4 as the positive electrode material. The anode materials of lithium-ion batteries mainly include lithium cobaltate, lithium manganate, lithium nickelate, ternary materials, lithium iron phosphate, and so on, among which lithium cobaltate is the anode material used in the vast majority of lithium- ion batteries. Parameter information Nominal capacity: 4000mAh Maximum charge voltage: 3.65V Discharge termination voltage: 2V Maximum charge current: ≤1C Maximum continuous discharge current: 3C Discharge temperature: -20℃~60℃ Internal resistance: ≤20mΩ LFP26700-4000 Features Item Specification Rate performance the maximum discharge current can reach 12A continuous discharge Safety and reliability certified by RoHS, BIS, CB, UN38.3, UL, CE, MSDS and battery directive Strong adaptability suitable for working in different environments, discharge capacity ratio ≥ 65% at -10°C Long cycle life 0.5C/0.5C cycle life reaches more than 2000 times

An 18650 Battery is a lithium-ion rechargeable battery. The first 4 digits of the designation “18650” indicate the physical dimensions while the 5 th digit indicates it is a cylinder cell. The standard 18650 Li-Ion Battery is 18mm around by 65mm long. This type of battery is very common in applications such as laptop battery packs, flashlights, electric vehicles, cordless tools and various other devices that require portable power. Nominal capacity: 2600mAh Maximum charging voltage: 4.20V Discharge cut-off voltage: 2.75V Maximum charging current: ≤1C Maximum continuous discharge current: 5C Discharge temperature: -20℃~60℃ Internal resistance: ≤20mΩ NCM18650-2600ED Features Item Specification Rate performance the maximum discharge current can reach 13A continuous discharge. Safety and reliability certified by RoHS, BIS, CB, UN38.3, UL, CE, MSDS and battery directive certification. Strong adaptability suitable for working in different environments, discharge capacity ratio ≥60% at -20°C. Long cycle life 0.5C/3C cycle life reaches more than 500 times.

Nominal capacity: 10000mAh Maximum charging voltage: 4.0V Discharge termination voltage: 2.0V Maximum charging current: ≤1C Maximum continuous discharge current: 3C Discharge temperature: -30℃~60℃ Internal resistance: ≤3mΩ NaCR32140-10000 Features Item Specification Rate performance the maximum discharge current can reach 30A continuous discharge. Safety and reliability certified by RoHS, BIS, CB, UN38.3, UL, CE, MSDS and battery directive certification. Strong adaptability suitable for working in different environments, discharge capacity ratio >75% at -30°C. Long cycle life 0.5C/0.5C cycle life reaches more than 3000 times; 0.5C/2C cycle life reaches more than 1500 times.

Nominal capacity: 12500mAh Maximum charging voltage: 3.65V Discharge termination voltage: 2.0V Maximum charging current: ≤1C Maximum continuous discharge current: 2C Discharge temperature: -10℃~60℃ Internal resistance: ≤3mΩ LFP32140-12500 Product Features Item Specification Rate performance the maximum discharge current can reach 25A continuous discharge. Safety and reliability certified by RoHS, BIS, CB, UN38.3, UL, CE, MSDS and   battery directive certification. Strong adaptability suitable for working in different environments, discharge capacity ratio >75% at -10°C. Long cycle life 0.5C/0.5C cycle life reaches more than 2500 times.

As a raw material for candle manufacturing, Fischer-Tropsch wax offers the following significant advantages, which can enhance candle performance and manufacturing efficiency: 1. High melting point and thermal stability Wide melting point range (60–120°C): Fischer-Tropsch wax with different melting points can be selected according to requirements, suitable for making candles used in high-temperature environments (such as outdoor candles), reducing the risk of deformation or melting. High-temperature stability: It is not easy to drip during combustion, reducing the risk of fire, especially suitable for pillar candles with containerless design. 2. Excellent combustion performance Smokeless and odorless: The fully hydrogenated hydrocarbon structure ensures clean combustion, suitable for environments sensitive to odors (such as aromatic candle substrates). Long burning time: The high carbon number molecular structure (C20–C60) makes the burning rate 10–20% slower than that of paraffin wax, prolonging the service life.High brightness: The flame is bright during combustion, with luminous flux superior to soy wax and close to traditional paraffin wax. 3. Material compatibility and processing advantages Low viscosity (molten state): Easy to mix with dyes and fragrances, with dispersion uniformity 30% higher than paraffin wax, avoiding color difference or uneven aroma. Low shrinkage rate (<5%): Not easy to crack during demolding, resulting in smooth finished product surface and reduced subsequent polishing costs. High hardness (penetration <1 mm): Supports complex mold shapes (such as embossed candles) and resists scratches during transportation.

We supply Kaya charcoal, Coffee... at reasonable prices

Minimum Order: 20 square metres

1. Specially designed for all kinds of bottle caps 2. High speed with 60-70pcs/min 3. Only need to change different dies when you change to make other types caps 4. It is easy to operate and maintain the machine 5. Rolling dies have long life time of 12 months or more Specification Diameter of workpieces 20-80mm Range of pitch 2-12mm Thread length Max.50mm Max.Thickness of pipe 1.5mm Machine motor 2.2KW / 1.5KW Supply voltage 380V 50Hz 3P Feeding type Vibration bowl or Manual Weight(reference) 650(KG) Package Dimension(L*W*H) 1650*1500*1690 mm Dimension(L*W*H) 1600*1450*1540 mm Working principle Cold extrusion rolling Application All type pipe fittings, lamp cap, etc Q1. Are you factory or trading company ? A1. We are factory of manufacturing thread rolling machine and dies by ourselves. Welcome to visit our factory, if possible. Q2. What is the delivery time ? A2. Usually 15-25 working days for machine, and 10-15 working days for dies. Q3. What is the warranty time for machine? A3. Usually 12 months from B/L date. Q4. What is the payment term? A4. T/T, Western Union, Money Gram, Alipay, PayPal. 50% as deposit, and 50% before shipping. Q5. Is it possible to design and produce automatic loading & unloading devices? A5. Yes, Engineer can design special auto feeding device according to your products. But please provide the drawing of your products before that. Q6. How will you solve problems that we face during using your machine? A6. A. Please provide necessary videos and pictures that can show the problems, our engineers will check and give corresponding solutions. B. Will arrange engineers to solve problems at the scene, if possible.

Minimum Order: 1 bags

The primary reason for premature roofing failure is typically due to a lack of adequate ventilation.  Even if every precaution is taken to assure a roof’s integrity, with just the normal process of heating & cooling, there will be some condensation, that with proper ventilation will be evaporated quickly enough that there is minimal to no lasting effects.  On a typical sunny summer day, roofing material underneath the top overlay can reach temperatures of 160 degrees!  Proper installation of an adequate number of roof vents allows damaging heat a way to escape, reducing temperatures to harmless levels.  Finally, and moreover, through the normal expanding and contracting that roofs of all types must endure, is pressures that develop as an artifact of those natural processes.  Proper ventilation reduces all these issues!  Each Aluminum One-Way Vent features a vandal-proof cap to prevent wind-blown rain or snow from entering.

One-piece spun Aluminum body with Heavy-Duty dome strainer & clamping ring for years of long-lasting durability. Featuring the USMS DS (Double Seal) No leak mechanical Water-Tite seal (Patent pending)! Currently Standard Retrofit Roof Drain is designed to mechanically expand both the Upper Seal to tighten firmly to the drain’s stem and the Lower Seal to the inside of the actual drainpipe in which it is inserted, simply by turning 4 screws perpendicular from one another, each an equal number of turns so that it seals evenly to both the drain itself and the actual drainpipe. Material: Aluminum Drain Body: 11 Gauge (.125) spun aluminum Flange: 17.5″ diameter with sump area Clamping Ring: Cast aluminum

Metal spinning is a metal processing process that deforms metal materials by rotating the workpiece and applying local pressure to obtain parts of the desired shape and size. Spinning process classification According to the deformation method, it is divided into ordinary spinning, strong spinning and shrinking spinning. Ordinary spinning uses the spinning wheel to roll and pressurize along the surface of the workpiece to gradually deform the workpiece, which is suitable for processing thin-walled parts. Strong spinning increases the spinning force and reduces the contact area between the spinning wheel and the workpiece, so that the material produces a larger deformation in a smaller deformation area, which can improve material utilization and part strength.