Sealing Gasket

Achieve superior leak prevention and long-lasting system integrity with our high-performance Sealing Gasket, engineered to deliver exceptional sealing efficiency across a wide range of industrial, automotive, and mechanical applications. Designed for use in fluid, gas, and thermal systems, the Sealing Gasket provides a tight, reliable barrier between mating surfaces, preventing the escape of liquids or gases even under high pressure, vibration, or thermal cycling conditions.

Manufactured from premium materials such as graphite, rubber, PTFE, metal-reinforced composites, or multi-layer steel (MLS), our Sealing Gasket is tailored to meet the needs of diverse operating environments—from internal combustion engines and hydraulic pumps to chemical processing equipment and HVAC systems. Each gasket is precision-cut or molded to ensure uniform compression and an exact fit, minimizing the risk of blowouts, leaks, or system failures.

The advanced material structure of the Sealing Gasket offers excellent chemical resistance, thermal stability, and mechanical strength, making it suitable for both dynamic and static sealing points. Whether sealing oil, coolant, fuel, steam, or corrosive chemicals, this gasket maintains integrity even in demanding temperature and pressure ranges.

Backed by rigorous quality assurance protocols, including thickness verification, compression set testing, and dimensional inspections, the Sealing Gasket meets or exceeds relevant industry standards (such as ISO, DIN, and SAE). Installation is simple and efficient, reducing downtime and supporting long-term maintenance schedules.

Trusted by engineers, mechanics, and industrial technicians worldwide, the Sealing Gasket is the smart choice for applications where leak-free performance, reliability, and durability are non-negotiable.

1. More than 60 kinds of materials, more than a dozen alloys, and 70 kinds of numbers.
2. Many products can be produced, 3500+ precision casting molds, 1000+ sand casting molds.
3. The production accessories can be large or small.
4. A single product of 50 kg can be customized.
5. Multiple furnaces are available for selection, and single pieces of 50 kg to 850 kg can be produced.
6. 20 years of master, rich experience, entered the industry in the 1980s, the industry leader.
7. Products are traceable, and each furnace product has a certificate: 3.1 Material Certificate.
8. Customers can ask a third-party testing agency to issue a 3.2 certificate.
9. Processing fine products can be issued with a processing certificate.

Leierwo’s advantages in casting precision castings in the automotive manufacturing industry

Leierwo, with its ISO 9001 and IATF 16949-certified quality management system, meets the automotive industry’s stringent requirements for consistent performance and quality control. The company’s casting capabilities for materials such as alloy steel and carbon steel make it suitable for manufacturing key parts such as engine mounts, transmission housings, and brake system components. Furthermore, the company possesses CNC machining capabilities, enabling subsequent processing of precision castings to enhance dimensional accuracy and assembly compatibility, further meeting the high-standard processing requirements of automotive components.

Main material selection

Automotive parts require materials with excellent strength, toughness, fatigue resistance, weldability, and a certain degree of corrosion resistance, while also balancing lightweighting and cost-effectiveness. In precision casting, carbon steel and alloy steels are widely used due to their excellent mechanical properties and machinability.

Common Materials:
Carbon Steel Series:
1045: Excellent strength and toughness, suitable for structural parts such as shafts and connecting rods.
4130: A chromium-molybdenum alloy with excellent heat treatment properties, suitable for high-strength, fatigue-resistant components such as suspension systems and drive shafts.

Alloy Steel Series:
42CrMo (AISI 4140): High strength and toughness, suitable for key components such as gears, crankshafts, and camshafts.
35CrMo: Similar to 42CrMo, but with a slightly lower carbon content, suitable for components requiring excellent welding properties.
4140: Widely used in heavy-duty automotive parts such as shafts and chassis components.
Stainless Steel Series (for specific components)
304L/316L: Used in components requiring high corrosion resistance, such as exhaust systems and fuel systems.

Key casting service options

The automotive parts industry must balance mass production capacity, precision requirements, and cost control when choosing casting services. Three service categories each have their own focus:

Sand casting: This is the mainstream choice for automotive parts. Automotive parts are often mass-produced (e.g., engine blocks, chassis brackets, and wheel hubs). These parts have relatively regular shapes (without overly complex internal cavities or curved surfaces). Sand casting enables efficient mass production at a low cost, meeting the automotive industry’s demand for “large-scale standardization.”

Investment casting: This is suitable for critical parts with high precision and complex shapes, such as turbocharger blades and transmission gears. These parts must withstand high temperatures and high pressures, and require extremely high dimensional accuracy (e.g., blade curvature) and surface finish. The near-net-shape capabilities of investment casting reduce subsequent machining and ensure consistent performance.

CNC machining: This serves as a “precision supplement” to casting. Core automotive components (such as crankshafts and connecting rods) require strict dimensional tolerance control (such as shaft diameter tolerance +0.01mm). After sand or investment casting, key surfaces (such as connecting holes and locating grooves) are fine-machined through CNC machining to ensure assembly accuracy and operational stability.