close
Choose Your Site
Global
Social Media
 |
| Quantity: | |
|---|---|
Flat Washer | |||
1/4-20 | 5/16-18 | 3/8-16 | 1/2-13 |
9/16-12 | 5/8-11 | 3/4-10 | M3-0.5 |
M4-0.7 | M5-0.8 | M6-1.0 | M8-1.25 |
M10-1.5 | M12-1.75 | M16-2.0 | M20-2.5 |
The silicon bronze flat gasket is a high-end industrial fastening and sealing gasket made from high-quality QSi3-1/C65500/C65100 silicon bronze alloy as the core raw material, through high-precision cold stamping, fine polishing, and deburring. Unlike ordinary carbon steel, stainless steel, and brass flat gaskets, this product is a high-performance copper alloy precision accessory. Its overall structure is regular and rounded, with a flat, warp-free surface, centered hole diameter, and smooth, burr-free edges. Its dimensional accuracy strictly conforms to industrial precision assembly standards. The product is mainly used with various precision bolts, nuts, and flange components. By increasing the contact area and balancing the tightening pressure, it effectively protects the surface of equipment and workpieces. Furthermore, relying on the unique explosion-proof, corrosion-resistant, high-conductivity, and fatigue-resistant properties of silicon bronze alloy, it can perfectly adapt to harsh working conditions that ordinary gaskets cannot handle. It is widely used in high-end fields such as explosion-proof, marine, electrical, and heavy industry, and is a core special accessory for precision industrial assembly and special engineering construction.
This product is made of national standard QSi3-1 silicon-manganese-silicon bronze alloy, a pure and impurity-free material, eliminating the production process of inferior copper alloys mixed with waste materials. Compared to traditional brass gaskets, it effectively avoids problems such as zinc dezincification, oxidation whitening, corrosion cracking, etc.; compared to stainless steel gaskets, it has superior flexibility, conductivity, and shock absorption, produces no sparks upon impact, is non-magnetic, and combines high strength and high toughness, making it the preferred replacement for harsh working conditions.
Silicon bronze material has a dense and stable oxide protective layer, eliminating the need for secondary anti-corrosion treatments such as electroplating and painting. It naturally possesses excellent resistance to seawater salt spray, moisture, and weak acid and alkali corrosion. At the same time, the material has outstanding resistance to mechanical fatigue, and is not prone to creep deformation, loosening, breakage, etc., even under long-term high-frequency vibration, high-pressure fastening, and alternating hot and cold environments, significantly reducing equipment maintenance frequency and extending equipment lifespan.
The product possesses explosion-proof characteristics of being non-magnetic and spark-free upon impact, making it safe for use in flammable and explosive oil and gas, chemical, and dusty environments. It also boasts excellent electrical and thermal conductivity, with stable resistance and uniform conductivity, allowing it to be used as both a fastening gasket and a conductive connection gasket for electrical equipment—a dual-purpose product suitable for the multi-functional assembly needs of specialized equipment.
Utilizing an integrated cold stamping process with precision mold calibration, the plate surface has extremely high flatness, ensuring uniform force distribution during fastening. It can accurately fill workpiece assembly gaps, providing excellent sealing and protection. The product requires no secondary grinding or trimming; the hole diameter precisely matches the corresponding fastener specifications, ensuring smooth assembly without jamming or misalignment, significantly improving the assembly efficiency and forming accuracy of precision equipment.
Manufactured and processed in-house at the source factory, the entire process—from raw material selection, stamping, polishing and deburring, to dimensional verification—is controlled, eliminating middlemen markups. Each batch of products undergoes spectral material testing, dimensional tolerance testing, and appearance defect screening to eliminate defective and inferior products. Original factory quality is stable, and bulk purchasing offers cost-effectiveness.
Manufactured using high-precision CNC molds, the product's inner diameter, outer diameter, and thickness tolerances are strictly controlled to micron-level industrial standards. Holes are centered and neatly aligned, free from defects such as eccentricity, uneven edges, or inconsistent thickness. It is perfectly suited for automated precision assembly lines and the assembly needs of high-end special equipment.
The finished product has a smooth, delicate surface with uniform color, free from oxidation spots, scratches, burrs, and deformation. The silicon bronze alloy surface has an extremely stable natural protective film that is resistant to rust, fading, and peeling even after long-term use. Its weather resistance and wear resistance far exceed those of ordinary copper and steel gaskets, maintaining its perfect assembly condition even after extended use.
The material has a balanced ratio of hardness and toughness, resulting in high compressive strength. It is not easily flattened or deformed under high-pressure fastening conditions. Its excellent resilience effectively buffers vibration and impact during equipment operation, reducing the probability of fastener loosening, stabilizing equipment connections, and adapting to long-term dynamic operating conditions.
The entire series of standard specifications are compatible with various national standard precision bolts, screws, nuts, and flange connectors, offering excellent versatility and compatibility. It also supports non-standard customization such as widening, thickening, ultra-thinning, and irregular sizes, precisely matching the personalized assembly needs of various special equipment and customized projects.
Based on the core characteristics of silicon bronze flat gaskets—explosion-proof, corrosion-resistant, conductive, and vibration-resistant—this product is designed for high-end, demanding working conditions and is widely applicable to various precision and specialized industrial fields.
1. Marine Engineering: Assembly of ship deck equipment, seawater pipelines, marine valves, offshore wind power support structures, and coastal infrastructure fasteners, resisting corrosion from seawater salt spray and high humidity environments, solving the problem of easy corrosion and failure of ordinary gaskets;
2. Chemical Explosion-Proof Field: Fastening of oil and gas equipment, chemical machinery equipment, explosion-proof electrical cabinets, dust workshop equipment, and flanges for flammable and explosive pipelines, with non-sparking characteristics to eliminate safety hazards and ensure safe operating conditions;
3. Electrical and Electromechanical Field: High and low voltage switchgear, new energy electrical control equipment, electromechanical terminals, and precision electrical instruments, combining fastening and conductivity functions, with stable conductivity to ensure the safe operation of electrical equipment;
4. Heavy Machinery Field: Assembly of hydraulic valve bodies, precision transmission equipment, engineering machinery, and rail transit locomotive components, with vibration and fatigue resistance, suitable for long-term high-frequency operation;
5. High-End Scientific Research Special Equipment: Assembly of testing instruments, precision automatic control equipment, and non-magnetic precision devices, meeting the stringent assembly standards of high-end equipment due to its non-magnetic, high precision, and high stability.
This product line offers a complete range of silicon bronze flat washers, covering all standard and precision assembly models, and also supports non-standard and customized customization. Key parameters are as follows:
1. Compatible Bolt Specifications: Standard and American standard precision bolts are readily available; less common specifications can be customized.
2. Standard Thicknesses: 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, including ultra-thin precision, standard, and heavy-duty thickened versions.
3. Core Materials: QSi3-1, C65500, C65100; pure materials, no impurities, no waste; material testing reports are available.
4. Product Categories: Standard precision silicon bronze flat washers, widened and enlarged silicon bronze washers, heavy-duty thickened silicon bronze flat washers, ultra-thin precision flat washers, and custom-made non-standard washers.
5. Standards: Compliant with GB97 and other precision washer production standards; copper alloy materials conform to industry specifications for special industrial parts, meeting the acceptance requirements of high-end projects and special equipment.
Gaskets are individually sealed in anti-static bags to prevent air, moisture, and oxidation; thickened cardboard boxes provide double-layer protection. All products are clearly categorized and labeled with specifications and models, facilitating warehouse organization, material requisition, and inventory management.
Fast order response; in-stock orders are prioritized. The optimal delivery plan can be matched based on order volume and receiving area, efficiently bridging project deadlines and production preparation needs.
Full logistics tracking and traceability ensure comprehensive protection of customer rights against damage, loss, scratches, moisture damage, and other issues during transportation, eliminating worries about after-sales service.
A shipbuilding engineering client: We specifically purchased QSi3-1 silicon bronze flat gaskets for assembling equipment on coastal vessels. Previously, brass gaskets corroded and dezincified after only six months. This silicon bronze gasket boasts exceptional stability, showing no oxidation or rust even after over a year of use in salt spray environments. The gasket's precise dimensions, flat surface, and excellent sealing performance ensured the project passed acceptance on the first attempt. It's a top-quality accessory for corrosion-resistant coastal applications, and we're committed to long-term cooperation!
An explosion-proof equipment manufacturer: Our company's explosion-proof electrical equipment gaskets require non-magnetic, non-sparking, and conductive properties. This silicon bronze flat gasket fully meets these standards, passing spectral analysis. Its fine workmanship, burr-free finish, and high fit prevent loosening during equipment vibration make it far more functional than ordinary gaskets. Bulk purchases offer excellent value.
A precision electromechanical assembly user: Used for conductive connections in new energy electrical control equipment. The gasket offers stable conductivity, high flatness, and even stress distribution after tightening, preventing damage to precision workpieces. Its exceptional toughness withstands repeated disassembly and prolonged pressure without deformation, perfectly meeting the high-standard assembly requirements of precision equipment. Its quality is exceptionally reliable.
For non-standard customization clients: We ordered a batch of widened and thickened silicon bronze flat gaskets for special hydraulic equipment. The manufacturer provided professional support and strictly adhered to the tolerances specified in the drawings. The finished products are dimensionally accurate, have excellent pressure resistance and creep resistance, and provide stable sealing under long-term high-pressure conditions. The customization cycle was punctual, and the materials met standards, making us a trustworthy high-end copper gasket supplier.
