JB982-77 Combination Metal-Bonded Sealing Washers Standard, Materials & Technical Requirements

JB982-77 Combination Metal-Bonded Sealing Washers Standard

The JB982-77 standard for combination metal-bonded sealing washers is widely used across the machinery and manufacturing industries. It defines the requirements for sealing washers used in various sealing and fastening applications, ensuring reliable performance in critical industrial environments.

These washers are commonly applied in industries such as machinery, automotive, marine, and heavy equipment manufacturing, where secure sealing and long-term durability are essential.

Material Requirements Under JB982-77 Standard

According to the JB982-77 specification, combination metal-bonded sealing washers are typically manufactured from:

• Carbon steel

• Stainless steel

• Alloy steel

Depending on the application environment, alternative materials may also be used, including:

• Copper

• Aluminum

The selected material must meet the required strength, hardness, and durability standards to ensure reliable performance under operational stress.

Sizes, Shapes, and Design Variations

The JB982-77 standard defines strict requirements for the dimensions and geometry of sealing washers to ensure proper sealing and compatibility.

Common shapes include:

• Round

• Square

• Oval

Key dimensional parameters include:

• Outer diameter

• Inner diameter

• Thickness

• Compression characteristics

These specifications ensure a precise fit and effective sealing performance across different connection types.

Types of JB982-77 Metal-Bonded Sealing Washers

1. High-Pressure Metal-Bonded Sealing Washers (Up to 3,000 psi+)

These washers are designed for demanding sealing applications:

• One-piece bonded construction

• Excellent sealing performance under high pressure

• Suitable for oil, gas, and hydraulic systems

Material options:

• Zinc-plated steel with Buna-N rubber seal (reusable,      corrosion-resistant)

• Stainless steel with PVC seal (waterproof 360° sealing, not      reusable)

• Grades such as 304 and 316 stainless steel for enhanced      corrosion resistance

2. Metric High-Pressure Metal-Bonded Sealing Washers (Up to 7,000 psi+)

• Designed for extreme high-pressure environments

• Zinc-plated steel structure for corrosion resistance

• Buna-N rubber seal with strong resistance to oil, chemicals,      and abrasion

• Reusable in many applications

3. Standard Pressure Metal-Bonded Sealing Washers (Up to 100 psi)

• Suitable for general industrial sealing applications

• Made from 18-8 stainless steel

• Silicone or rubber sealing element

• Excellent weather and chemical resistance

• Reusable design

JB982-77 Technical Requirements

The JB982-77 standard also defines key performance requirements for combination metal-bonded sealing washers:

1. Surface Treatment

Washers must undergo appropriate surface treatments to enhance:

• Corrosion resistance

• Rust protection

• Long-term durability

2. Sealing Performance

The primary function of these washers is sealing. The standard specifies:

• Compression deflection rate

• Sealing tightness

• Filling compression value

3. Heat Resistance

Washers must maintain stability under varying temperature conditions and resist deformation in high-heat environments.

4. Wear Resistance

In applications involving vibration or movement, washers must withstand:

• Friction

• Mechanical stress

• Long-term wear

5. Ease of Installation and Removal

The standard ensures that combination washers allow:

• Easy assembly

• Easy disassembly

• Reliable reuse (depending on material type)

Why JB982-77 Standard Matters

The JB982-77 standard ensures:

• Consistent manufacturing quality

• Reliable sealing performance

• Improved safety in industrial applications

• Compatibility across different systems and industries

It plays an important role in advancing sealing technology and improving the reliability of industrial fastening.

Industrial Applications

JB982-77 combination metal-bonded sealing washers are widely used in:

• Machinery and equipment

• Automotive systems

• Marine engineering

• Hydraulic and pneumatic systems

• Industrial pipelines and connections

Professional Fastener & Sealing Solutions

If you are looking for high-quality fastener screws, sealing washers, or customized engineering solutions, we are ready to support your project with professional expertise and reliable products.

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