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U-Cup
Categories : Rubber Products & Parts
U-Cups (U-rings) are versatile lip seals, named after their characteristic "U"-shaped cross-section. They are specifically engineered for reciprocating applications and serve as primary seals in hydraulic and pneumatic cylinders. Key Performance Benefits Pressure-Energized Sealing: The U-shape enables the sealing lips to expand against the hardware surface under system pressure. As the pressure increases, the sealing force proportionally grows, ensuring a reliable seal. Dual-Purpose Design: U-Cups function effectively as Rod Seals (preventing external leakage) and Piston Seals (preventing internal bypass between cylinder chambers). Optimized Friction: The lip geometry provides a secure seal with minimal contact area, reducing heat generation and mechanical wear during operation. Synergy with Back-up Rings High-Pressure Integrity: For systems operating above 5 MPa (50 bar), pairing a U-Cup with a back-up ring is essential to prevent material extrusion into clearance gaps. Structural Support: The back-up ring stabilizes the U-Cup in dynamic applications, particularly when large extrusion gaps or high-speed cycles are present. Common Industry Materials Polyurethane (PU): Offers superior abrasion resistance and high shear strength, ideal for heavy-duty hydraulic systems. Nitrile (NBR): Standard choice for pneumatic cylinders and lower-pressure environments. PTFE / POM: Often used for back-up rings to provide high-hardness support.
3 Side Seal & Standup Pouch & Zipper Pouch Making Machine
Categories : Plastic Bag Making Machines
High-pressure sealing for laminated film - Low temperature, high pressure sealing bars are required for laminated film. For secure sealing requires multiple times of sealing and cooling to ensure good sealing quality.
Washer
Categories : Maintenance & Lubrication
High-Performance Alternative to Standard O-Rings Our precision-engineered rubber washers—also known as square-cuts, lathe-cuts, or square-rings—feature a rectangular cross-section designed for superior sealing integrity. While they follow the AS 568 size standards and groove designs, their geometry offers enhanced stability and longevity compared to traditional O-Rings, making them the ideal choice for high-pressure and critical applications. Why Choose Rubber Washers? While O-Rings are versatile, Rubber Washers provide distinct mechanical advantages in specific environments: Superior Pressure Resistance: The rectangular profile handles higher pressure loads without extrusion. Enhanced Stability: Higher groove-fill rate prevents the seal from sliding, twisting, or spiraling during operation. Precision Engineering: Mold parting lines can be strategically placed away from sealing surfaces, ensuring a burr-free finish and tighter dimensional tolerances. Versatile Motion: While primarily used for static seals, they are highly effective for piston and rod seals.
Central Seal Pouch Bag Making Machine SCFA
Categories : Plastic Bag Making Machines
High-pressure sealing for laminated film - Low temperature, high pressure sealing bars are required for laminated film. For secure sealing requires multiple times of sealing and cooling to ensure good sealing quality. Central seal & closure device - Guiding rollers closes and seal the lap for central sealed bag.
Gasket
Categories : Rubber Products & Parts
A gasket is a mechanical seal placed between two stationary surfaces to create a leak-free joint when compressed. Unlike O-rings or washers, gaskets are typically utilized in flat or flanged connections where a larger surface area requires uniform pressure distribution. Why Choose Our Sealing Technology? Leak-Free Integrity: Engineered to compensate for surface irregularities, ensuring a 100% tight seal. Extreme Resistance: Formulated to withstand high pressure, corrosive chemicals, and thermal cycling. Extended Service Life: Durable materials reduce maintenance frequency and total cost of ownership.
D-Ring
Categories : Industrial Parts & Safety Gear
A D-Ring is a high-performance mechanical seal with a distinctive "D"-shaped cross-section, featuring a flat base and a curved sealing face. This innovative geometry combines the effective sealing properties of an O-ring with the enhanced stability of a square ring, making it an ideal solution for preventing spiral failure, extrusion, and dynamic leakage in rotary and reciprocating applications. D-Rings deliver reliable performance under high pressure, dynamic motion, and challenging industrial conditions, ensuring long service life and minimal maintenance.
Bonded seal
A bonded seal is a hybrid sealing component that combines a metal washer with an elastomeric sealing ring bonded to its inner diameter. This design creates a reliable, leak-proof seal around bolts, screws, and flanged connections in static applications such as hydraulic and pneumatic systems. Originally developed by the Dowty Group, these seals are also commonly known as Dowty seals or bonded washers.
Back-up Ring
Categories : Industrial Parts & Safety Gear
A Back-up Ring is an essential sealing component designed to be used in conjunction with O-rings to prevent seal extrusion and premature failure in high-pressure, high-temperature, or large-clearance applications. By providing firm structural support to the O-ring, the back-up ring effectively blocks extrusion gaps, ensuring sealing stability, extended service life, and reliable performance under demanding operating conditions. Back-up rings are widely used in hydraulic and pneumatic systems, where pressure spikes and dynamic motion can compromise standard elastomer seals. Available in materials such as PTFE (Teflon) and Nylon, they offer excellent resistance to pressure, wear, and chemical attack, making them ideal for industrial, oil & gas, and heavy-duty engineering applications.