Tools & Hardware - Others

WELCOME TO Founded at 2010,LANGFANG OLAN GLASS BEADS CO., LTD is a professional glass beads manufacturer in China, with advanced production technology, the company has seen year on year growth to the successful business it is today. We can manufacture various glass beads for road safety and industrial purpose. And the company are dedicated to roadway safety industry with the mission of roadway safety expert. Our main products are reflective glass beads for road marking, sandblasting glass beads, hollow glass microspheres, grinding glass beads, high index glass beads and color glass beads.

Minimum Order: 1 bags

Our fiberglass backing is made of fine materials, it is mainly to use as the plate of the flap disc. We have many kinds of models which are widely used for different application.

In sorting robot systems, the sealing performance of vacuum suction cups directly determines gripping stability and overall operational reliability. As a critical sealing element, the O-ring plays a decisive role in vacuum system performance. Its material selection, dimensional matching, and installation accuracy are key factors influencing vacuum stability. To achieve consistent and repeatable vacuum adsorption, the following aspects should be carefully controlled. Principles for O-Ring Material Selection Material selection should be based on actual operating conditions, including vacuum level, temperature range, media exposure, and service life requirements, rather than simply choosing the highest-grade material available. Nitrile Rubber (NBR) NBR offers good wear resistance, stable elasticity, and excellent cost performance. Typical operating temperature ranges from -40°C to 125°C. Suitable applications include standard sorting environments, systems without aggressive chemical media, and low- to medium-temperature vacuum applications. Due to its balanced performance and cost efficiency, NBR is widely used in vacuum suction cups for sorting robots. Fluoroelastomer (FKM) FKM is characterized by excellent high-temperature resistance, chemical stability, and low outgassing properties. Its maximum operating temperature can reach approximately 250°C. It is suitable for high-temperature environments, applications with oil mist or chemical exposure, and vacuum systems with higher stability requirements. Under demanding operating conditions, FKM provides superior long-term sealing reliability. Perfluoroelastomer (FFKM) FFKM offers outstanding resistance to extreme temperatures, up to about 325°C, as well as strong acids and alkalis. It is typically used in extreme operating conditions or high-end applications such as semiconductor manufacturing, chemical processing, and advanced automation systems. Due to its high cost, FFKM is generally reserved for specialized or premium projects. Installation and Structural Design Considerations In practical applications, installation accuracy often has an equal or even greater impact on vacuum stability than material selection. Compression Ratio Control For dynamic sealing, the recommended compression ratio is 6 to 20 percent. For static sealing, the compression ratio should be maintained between 15 and 30 percent. Insufficient compression can lead to leakage, while excessive compression accelerates material aging and reduces service life. Seal Groove Design The groove width should be at least 1.4 times the O-ring cross-section diameter. The groove inner diameter should be slightly smaller than the O-ring inner diameter to ensure proper pre-compression after installation. A well-designed groove helps prevent rolling, extrusion, or instability of the O-ring during operation. Surface Finish Requirements The recommended surface roughness of the sealing area is Ra 0.8 micrometers or better. Groove surfaces should be free of burrs and sharp edges to avoid cutting damage or stress concentration. High-quality surface finishing is essential to minimize micro-leakage in vacuum systems. Common Issues and Practical Recommendations Avoid using lubricants containing molybdenum disulfide, as such additives may react adversely with rubber materials and shorten sealing life. For high-vacuum applications, gas permeability and outgassing performance should be carefully considered, with preference given to low-outgassing materials. A regular inspection and replacement schedule should be established. O-rings showing signs of hardening, deformation, or cracking should be replaced promptly. The suction cup and workpiece surfaces should be kept clean. Dust, oil contamination, or foreign particles can directly compromise sealing contact and reduce adsorption efficiency. Stable vacuum adsorption in sorting robots is not determined by a single component but by the combined effect of material selection, structural design, and installation quality. By selecting appropriate O-ring materials, optimizing sealing groove design, and following standardized installation procedures, the stability and service life of vacuum systems can be significantly improved. For application-specific optimization based on operating conditions, equipment models, or large-scale deployment, further technical discussion is always recommended.

Minimum Order: 1000

API RW downhole pump Barrel thick Wall Metal Plunger Rod Pumps Tubing or Rod Pumps including the thin wall barrel and thick wall barrel,Their specific type is API RH Barrel,API TH Barrel and API RW Barrel. The pump barrel material can be carbon steel,stainless steel,Corrosion-resistant brass and Nickel copper alloy.

Minimum Order: 1 bags

Joint Power Shanghai Seals Co.,ltd. is a manufacturer of SiC seal ring, founded in 2001, located at No.333, Yuantai Road, Baoshan District, Shanghai, covering an area of 30,200 square meters with complete production lines of silicon carbide seal rings, employing 298 people. We have been specialized in R&D of silicon carbide material and production of silicon carbide seal rings for 21 years.

Minimum Order: 1 bags

Standard: ASME/ANSI B18.2.2, ASME/ANSI B18.2.4M, ASME B18.2.6/6M Size: 1/4” - 4”, M6 - M100 Material: Carbon Steel, Alloy Steel, Stainless Steel Grade: ASTM A194/A194M Gr 2H,2HM,4,7,7M,8,8M ASTM A563 Gr A, C, DH ASTM A563M Gr 8S, 10S Thread: M, UNC, UNF Finish: Plain, Zinc Plated (Clear/Blue/Yellow/Black), Black Oxide, Nickel, Hot Dip Galvanized, Mechanical Galvanized, Geomet, Teflon, Zinc-Nickel Alloy

Standard: ASME/ANSI B18.2.1 Size: 1/4” - 3” Material: Carbon Steel, Alloy Steel Grade: SAE J429 Gr 2,5,8 SS304, SS316 Thread: M, UNC, UNF Finish: Plain, Zinc Plated (Clear/Blue/Yellow/Black), Black Oxide, Nickel, Hot Dip Galvanized, Mechanical Galvanized, Geomet, Teflon, Zinc-Nickel Alloy

Standard: ASTM F436/F436M, ASME/ANSI B18.22.1 USS/SAE, DIN125A, DIN125B, DIN126, DIN433, DIN440, DIN7349, DIN988, DIN9021 Size: 1/4” - 4”, M5 - M100 Material: Carbon Steel, Alloy Steel, Stainless Steel Finish: Plain, Zinc Plated (Clear/Blue/Yellow/Black), Black Oxide, Nickel, Hot Dip Galvanized, Mechanical Galvanized, Geomet, Teflon, Zinc-Nickel Alloy

Standard: IFI 136, DIN 975/976, ASTM A193, ASTM A320 Size: 1/4” – 4”, M5 - M100 Material: Carbon Steel, Alloy Steel, Stainless Steel Grade: ASTM A193 Gr. B7, B7M, B8, B8M, B16 ASTM A320 Gr. L7, L7M, L43 SAE J429 Gr. 2,5,8 DIN 975/976 Class 4.8, 8.8, 10.9 Thread: M, UNC, UNF Finish: Plain, Zinc Plated (Clear/Blue/Yellow/Black), Black Oxide, Nickel, Hot Dip Galvanized, Mechanical Galvanized, Geomet, Teflon, Zinc-Nickel Alloy

Standard: ASME/ANSI B18.2.2, ASME/ANSI B18.2.4M, ASME B18.2.6/6M Size: 1/4” - 4”, M6 - M100 Material: Carbon Steel, Alloy Steel, Stainless Steel Grade: ASTM A194/A194M Gr 2H,2HM,4,7,7M,8,8M ASTM A563 Gr A, C, DH ASTM A563M Gr 8S, 10S Thread: M, UNC, UNF Finish: Plain, Zinc Plated (Clear/Blue/Yellow/Black), Black Oxide, Nickel, Hot Dip Galvanized, Mechanical Galvanized, Geomet, Teflon, Zinc-Nickel Alloy

Minimum Order: 500

Standard: ASME/ANSI B18.2.6, ASME/ANSI B18.2.6M Size: 1/2” - 1 1/2”, M12 - M36 Material: Carbon Steel, Alloy Steel Grade: ASTM F3125 Gr. A325, A325M, A490, A490M Type 1 ASTM A325, A490 Type 1 ASTM A325M 8S, A490M 10S Type 1 Thread: M, UNC, UNF Finish: Plain, Zinc Plated (Clear/Blue/Yellow/Black), Black Oxide, Nickel, Hot Dip Galvanized, Mechanical Galvanized, Geomet, Teflon, Zinc-Nickel Alloy

Minimum Order: 500

Rapid mold replacement: By simply pressing a button, the molds can be quickly disassembled and replaced, allowing for efficient production and reduced downtime. ​ Flexible head rotation: With a 360 degree rotation capability, the clamp head can be easily adjusted to accommodate various work requirements, allowing for greater versatility and precision. ​ Energy-efficient handle extension: The handles can be elongated up to 780mm, enabling operators to use less energy while maintaining optimal control over the clamp, leading to increased efficiency and reduced fatigue. ​ Uniform pressure distribution: The horizontal press design ensures that pressure is applied parallel to the steel sleeve, resulting in even force distribution around the pipe connections. This leads to improved performance and better quality connections.

Product Description: Made of high quality anti-stretch PVC coated fiberglass, it can keep accurate graduation against long term use and provides superior measurement consistency. For nowadays shopping online is very popular, a handy measuring ruler is helpful to figure out our body size to choose suitable clothes.This sewing ruler tool works wonderful for all sewing applications and body measurements, also recommended for bra or lingerie seamstress work. Unique black and white colors availble, with metric graduation one side, inch measurements on the back side, and there is a special space between 53inches to 58inches for custom logo design. We provide OEM and ODM services for you by customizing your company logo, name, contact information on the item not only for wholesale quantity but also small trial order!

Product Description Silver Brazing Diamond Saw Blade And Segment Features It works in low noise, pollution and small cutting slot which ensures maximum use of stone and uniform thickness. Applications: * Marble and Granite quarry * Marble and Granite raw block squaring ; * Multiple wire saw for block cutting ; Main Features: 1: Our diamond wires have been tested by various of machines to cut different material and prove to be effective and excellent; 2:low noise , high cutting effiency, less polllution , more safer;