Sealing Washers for Bolts
Products Description
1. Integrated Sealing Structure for More Thorough Protection
The sealing washers for bolts feature a composite structure of metal and elastomer. When the bolts are tightened, the elastic sealing ring is evenly compressed, forming a ring-shaped sealing surface that effectively prevents media leakage. It maintains stable performance even under high-pressure, high-temperature, or vibration environments.
2. Multiple Material Options for Different Working Conditions
Depending on the application environment, we offer a variety of material options:
Stainless Steel + NBR: Oil-resistant, wear-resistant, suitable for hydraulic and mechanical systems;
Copper + Fluororubber (FKM): Preferred for high-temperature and high-pressure sealing;
Aluminum + Silicone Rubber: Lightweight design, strong aging resistance;
Carbon Steel + Neoprene Rubber (CR): High cost-performance ratio, suitable for general waterproof sealing;
Special Alloy + EPDM: Used in new energy and chemical corrosion protection scenarios.

Manufacturing Advantages
Independent Mold and Precision Stamping Capabilities
We have our own mold development center and utilize high-precision stamping equipment (accuracy ±0.02mm), meeting the stringent requirements for dimensional stability and consistency in mass production.
Metal-Rubber Integrated Molding Technology
Through advanced hot-press vulcanization composite technology, we achieve a high-molecular chemical bond between the metal Stainless Steel Nut for Screw Bolt and the sealing layer, making the sealing layer less prone to peeling and bubbling, with durability far exceeding traditional adhesive structures.
Surface Corrosion Protection and Wear Resistance Treatment
We employ appropriate surface treatment processes for different metal materials, such as nickel plating, electrophoresis, anodizing, and passivation, effectively improving corrosion resistance and surface hardness, ensuring long-term stable use.
Comprehensive Quality Control System
From raw material warehousing and semi-finished Cross Recessed Screw testing to finished product sampling, all processes are conducted in accordance with the ISO9001 quality system. We are equipped with testing equipment such as optical dimension measuring instruments, hardness testers, and sealing performance testers to ensure that every batch of products meets international standards.

Material & Design Excellence
1. Superior Substrates for Durability and Reliability
Stainless Steel (304/316): Corrosion-resistant, high-temperature resistant, suitable for chemical and marine environments;
Aluminum Alloy (6061/5052): Lightweight and with good thermal conductivity;
Copper and Brass: Excellent electrical conductivity, suitable for sealing electrical and new energy terminal connections;
Special Steels: Used in high-pressure and extreme environments for mechanical equipment.
2. High-Elasticity Sealing Layer for Multiple Media
The sealing layer uses high-quality rubber materials (NBR, FKM, EPDM, silicone, etc.), possessing excellent oil resistance, aging resistance, and chemical corrosion resistance, ensuring consistent sealing performance under high temperature, high pressure, low temperature, or acid/alkali conditions.
3. Engineered Structural Design
The sealing lip, compression ratio, and contact angle of the gasket have been optimized through finite element simulation, ensuring a tighter seal while reducing rubber damage caused by excessive compression, resulting in more durable and stable Self Tapping Screws.

Application Fields
Bolt sealing washers are widely used in the following fields, providing efficient sealing and protection for engineering connections:
New Energy Industry: Battery pack housings, energy storage systems, high-voltage busbar connections;
Automotive and Commercial Vehicle Manufacturing: Engine, hydraulic lines, and braking system Toggle Bolts seals;
Hydraulic and Pneumatic Systems: Pipe fittings and pump body thread seals;
Electrical and Electronic Equipment: Waterproof control boxes, motor end covers, and sensor interfaces;
Mechanical Equipment and Pressure Vessels: Oil-proof, gas-proof, and dust-proof bolt connections;
Marine and Chemical Equipment: Corrosion-resistant threaded sealing components.
In diverse industrial application scenarios, Sealing Washers for Bolts provide long-term, reliable structural protection for equipment through superior sealing performance and environmental resistance.

contact us

Hot Tags: sealing washers for bolts, China sealing washers for bolts manufacturers, suppliers, factory, Stainless Steel Hex Bolts and Nuts, Hexagon Head Fange Bolt Screw, Fanged Hexagon Head Bolt Screw, Double Point Screw, Fange Equipped Hexagon Head Bolt, Sealing Washers For Bolts
You Might Also Like
Send Inquiry













