Tools & Hardware

Dies (Optional) BSPT/NPT:1/2"-3/4",1"-2",2 1/2"-3",2 1/2"-4",5"-6" ·Alloy Steel / ·HSS

Minimum Order: 100

　　Oil seals are sealing elements used to close rotating or fixed shaft sealing devices. Their main function is to prevent lubricating oil, liquid, or gas from leaking from the shaft seal while blocking dust, dirt, and other external contaminants from entering the mechanical system. Oil seals are usually made of elastic materials (such as rubber or polyurethane) and metal components (such as springs) to achieve high sealing efficiency. 　　Types of Oil Seals 　　1. Static Oil Seals: Used for sealing between stationary parts, such as flanges and joints, typically to prevent liquid leakage or contaminants from entering. 　　2. Dynamic Oil Seals: Used for sealing rotating or reciprocating parts, maintaining sealing effectiveness during shaft rotation or reciprocating movement, suitable for pumps and motors. 　　3. Double Lip Oil Seals: Provide dual sealing effects with inner and outer sealing lips effectively blocking liquid leakage and external contaminants, suitable for higher-demand applications. 　　4. Mechanical Oil Seals: Used in high-pressure and high-temperature environments, featuring complex structures to maintain stable sealing performance under extreme working conditions. 　　Applications of Oil Seals 　　1. Machinery: Commonly used in various mechanical bearings to prevent lubricant leakage. 　　2. Automotive Engines: Used to seal crankshafts and camshafts to prevent oil leakage. 　　3. Agricultural and Construction Equipment: Such as excavators and bulldozers, playing a crucial sealing role in transmission systems. 　　4. Industrial Gearboxes: Ensuring lubrication of the gear system, preventing wear caused by friction during operation. 　　5. Hydraulic Systems: Maintaining system stability in hydraulic pumps and motors, preventing hydraulic oil leakage, and ensuring efficient operation. 　　By using oil seals appropriately, not only can the working efficiency of equipment be improved, but also its service life can be extended, ensuring long-term stable operation.

Minimum Order: 1000

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　　Oil seals play a crucial role in mechanical systems, effectively preventing contamination and ensuring that lubricants remain within the system. With a variety of types and materials available, selecting the appropriate oil seal for your machinery is essential for optimal performance and safety. Here are some guidelines to help you choose the best oil seal for your needs. 　　The fundamental structure of an oil seal includes a metal ring serving as the internal skeleton. The exterior can be crafted from metal or rubber materials, depending on the specific application. Springs are situated on the seal’s edge to support the seal and prevent the leakage of lubricants and other contaminants. The materials used in oil seals range from silicone and fluoroelastomer to PTFE. 　　The primary component of the oil seal is the lip, which creates a seal when pressed against the shaft’s surface. Oil seals can be equipped with or without a spring. The spring helps maintain pressure on the shaft, whereas oil seals without springs are primarily designed to keep dust out. 　　NQKSF oil seals are engineered to meet the rigorous demands of the industrial sector. They are utilized in hydraulic systems, pumps, pistons, pipelines, and various other mechanical devices. These seals are indispensable for the functioning of equipment that involves rotating parts, such as shafts and bearings. 　　Recognized for their exceptional performance across numerous applications, NQKSF oil seals offer high-quality products and comprehensive support for sealing systems. Customers can reach out to local distributors for expert guidance and assistance.

Minimum Order: 1000

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Minimum Order: 2 barrels

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 B18.2.2, DIN 934, DIN 555 Size: 1/4” - 4”, M6 - M100 Material: Carbon Steel, Alloy Steel, Stainless Steel Grade: SAE J995 Gr. 2,5,8 DIN 934, DIN 555 Class 4,6,8,10,12 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: 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: ASME/ANSI B18.2.1, IFI 149 DIN 931, DIN 933, DIN 960, DIN 961, ISO4014, ISO 4017 Size: 1/4” - 3”, M5 - M64 Material: Carbon Steel, Alloy Steel, Stainless Steel Grade: SAE J429 Gr 2,5,8 ASTM A307 Gr. A DIN 931/933/960/961 Class 4.8,5.8,6.8,8.8,10.9,12.9 ISO 4014/4017 Class 4.8,5.8,6.8,8.8,10.9,12.9 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