Heavy Duty seal consists of two separate metal seal rings and two square o-rings that provide elastic compression within housing bores and it is also called square bore face seal, HDDF.

Fuyote is a professional manufacturer of DF heavy duty seals with an 8000 square meter plant area. We specialize in providing high-quality DF heavy-duty metal face seals for various industry applications. Additionally, we offer OEM and ODM services. If you require heavy duty seals, please check out the chart below for detailed specifications of our heavy-duty seals, or feel free to contact us directly!

What Are DF Heavy Duty Seals?

DF Heavy Duty Seals, also known as DF floating seals, are specialized mechanical seals designed for robust performance in heavy-duty applications. They are constructed with two rectangular rubber rings and a metal ring. The metal ring features an L-shaped contact surface with the rubber rings. This unique design allows the seals to create a dynamic sealing system that effectively prevents fluid leakage and protects against contaminants in demanding environments.

The operation of DF Heavy Duty Seals is stabilized by the transmission force generated from the torque of the rubber rings. This force ensures that the floating seals maintain their position and effectiveness within their seat cavity during operation. These seals are commonly used in various heavy machinery applications, including construction equipment, mining machinery, agricultural machinery, and industrial gearboxes, where reliable sealing and protection are crucial for equipment performance and longevity.

Overview of Fuyote DF Heavy Duty Seals

Available heavy-duty seal sizes from Fuyote:

· Outer Diameter: 59~800mm

· Inner Diameter: 42~750mm

· Thickness: 14~54mm

Metal Seal Ring Materials: Fuyote's DF heavy-duty metal seal rings are manufactured of high alloy cast iron. We offer two kinds of material for seal rings: Chromiun Molybdenum Alloy and High Chromiun Molybdenum Alloy.

O-ring Materials: The material of elastomer components determines their tolerance for temperature and pressure. Fuyote provides three types of materials for o-rings: NBR, HNBR, and Silicone.

Advantages of heavy-duty seals: easy-to-process housing bores and highly sealing reliability.

Primary Applications of DF heavy duty seals: off-road and tracked vehicles, conveyors, construction equipment, agricultural machinery, and mining equipment.

The Advantages of Fuyote DF Heavy Duty Seals

Long Service Life: These heavy duty seals resist wear and corrosion, ensuring a prolonged service life with minimal maintenance.

Superior Sealing and Effective Contaminant Protection: Our DF metal face seals effectively shield against abrasive substances, moisture, chemicals, oil, and grease.

Alignment Flexibility: Designed to self-center, they accommodate shaft eccentricity and misalignment.

Improved Functionality: Lubrication and cooling between seal faces enable higher rotational speeds.

Fuyote's Innovative Heavy Duty Metal Face Seals Design

Fuyote's unique design, where only one metal seal rotates, ensures a maintenance-free and leak-proof seal. This design allows our DF heavy duty seals can offer exceptional durability and can withstand various conditions such as vibrations, misalignment, eccentricity, and assembly wear.

The use of black seal faces reduces rusting and improves O-ring grip, eliminating O-ring sliding. For those preferring white seal faces, Fuyote offers anti-skid stripes to achieve similar effectiveness.

Cross-hatched grooves on the heavy duty seal's contact bands ensure sufficient oil flow and effective heat management, making them suitable for challenging industrial environments beyond the capabilities of traditional rubber oil seals.

All of our DF heavy duty metal face seal products feature precision end grinding surfaces to maintain spherical and angular stability within each batch, preventing premature sealing failures caused by angular discrepancies.