Rubber Metal Bonded Seal Washer for Bolt and Nut Connection Combination Gasket

• Customization: Available
• Type: Flat Gasket
• Material: Customizable
• Model NO.: Combination Gasket
• Combination Washer Structure: Customizable
• Combination Washer Packaging: Customizable
• Spring Washer Type: Standard
• Performance: Corrosion
• Shape: O-Ring
• Size: M3 --M50
• Delivery Time: 3-7days
• Transport Package: Carton/Pallet
• Specification: 100000 Pieces/Per Month
• Trademark: zheng mai
• Origin: China
• HS Code: 4016931000
• Production Capacity: 50000pieces/Year
• Package Size: 100.00cm * 100.00cm * 100.00cm
• Package Gross Weight: 50.000kg

Product Description

Specification

Products Category	Hot sell hydraulic copper bonded seal washer self-adhesive gasket Self-centering combination washer
Material	Brass, stainless steel, aluminium, Bronze
Propeties	High temperature, low temperature, high pressure, low pressure,friction resistance
Sizes	Standard and customize
Medium	Hydraulic oil,  anti-fire fluid, water, gas etc
Application	excavators, loaders, graders, dump trucks, forklifts, bulldozers, scrapers, mining trucks, cranes, aerial vehicles, garbage transfer vehicle, sliding cars, agricultural machinery, logging equipment, etc.

A Combination Gasket, also known as a bonded seal or composite sealing washer, is a high-performance sealing component composed of a metal ring and an elastomer inner ring, securely bonded together to form a dual-material structure. The metal outer ring, typically made of stainless steel, carbon steel, or copper, provides structural strength and resistance to high pressure, while the inner rubber ring—made from NBR, FKM, EPDM, or silicone—offers excellent elasticity, sealing performance, and chemical resistance.
Combination gaskets are specially designed to provide reliable static sealing in threaded joints, bolt connections, and hydraulic fittings, effectively preventing leakage of fluids such as oil, gas, and water. The unique bonded structure ensures that the gasket remains stable under high pressure and high temperature conditions, while also resisting extrusion, corrosion, and deformation over time.
Key Advantages of Combination Gaskets:
Excellent sealing performance under high pressure and temperature
Durable and reusable with stable structure and long service life
Available in various sizes and materials to suit diverse industrial needs
Supports custom OEM production for non-standard specifications
Easy to install and compatible with standard bolts, flanges, and pipe fittings
Applications:
Combination gaskets are widely used across industries such as:
Automotive and heavy trucks (engine, transmission, fuel systems)
Hydraulic and pneumatic systems
Construction machinery
Oil & gas pipelines and chemical processing equipment
Aerospace components and fluid delivery systems
Household appliances and plumbing hardware
With their metal-rubber hybrid construction, combination gaskets have become an indispensable component in sealing applications that demand both strength and flexibility. Whether used in industrial maintenance, OEM production lines, or high-performance engineering environments, they offer cost-effective and reliable sealing solutions.

Product Description

Company Profile

FAQ

FAQ

1.Why are more and more customers choosing Xingtai Zhengmai Rubber Technology Co., Ltd.?
We specialize in manufacturing and exporting high-quality sealing products. Choosing us means peace of mind.
We offer a wide range of seals in various types, sizes, and specifications, covering high-precision mechanical components. One-stop sourcing saves you time, effort, and cost.
With over 20 years of experience, we have a strong R&D team and advanced equipment, making us one of the top domestic seal manufacturers.
We provide complete sealing solutions, from design, mold development, vulcanization, trimming, inspection to packaging. The entire process is efficient and ensures consistent quality.
2. Are you a trading company or a manufacturer?
We are a professional seal manufacturer with more than 20 years of experience.
3. What is your packaging method?
50 or 100 pieces per bag, 15 or 30 bags per carton.
Customized packaging is also available upon request.
4. What is your delivery time?
1–2 days if the items are in stock.
10–15 days if out of stock but mold is available.
25–30 days if out of stock and mold needs to be developed.
5. Can you produce according to samples?
Yes. We can analyze your sample, develop the mold, and proceed with production.
6. How do you ensure long-term cooperation with customers?
We continuously improve process control and product quality, reduce operating costs, and offer competitive prices to maximize customer benefits.
We treat every customer with sincerity—no matter the order size, we provide full services and one-stop sealing solutions to support long-term cooperation.