EAI Oil Seal 35mm x 52mm x 7mm TC Double Lip with Spring Metal Case

Description

Product Overview

The EAI TC double‑lip oil seal is engineered for precision sealing in high‑stress environments. Featuring a carbon‑steel spring core that maintains constant radial pressure, the seal resists deformation and ensures a tight barrier against fluid escape. The outer lip is molded from 70A Nitrile Butadiene Rubber (NBR), a material chosen for its excellent resistance to petroleum‑based oils, hydraulic fluids, and greases. The dimensions—35 mm inner diameter, 52 mm outer diameter, and 7 mm thickness—make it a perfect fit for a wide range of rotating shafts, including automotive crankshafts, motorcycle camshafts, differential axles, and industrial pump shafts. The metal case provides structural support, while the nitrile coating adds a protective layer that guards against abrasion and chemical attack. Designed to operate from –40 °F to 226 °F, this seal delivers reliable performance across extreme temperature ranges.

Usage

In automotive and motorcycle applications, the seal is installed on crankshafts and camshafts to prevent oil leakage and keep contaminants out of the bearing area. Its double‑lip design creates a dual barrier, which is especially valuable in high‑rpm engines where centrifugal forces can push oil outward. For hydraulic systems, the seal fits onto pump shafts and valve stems, providing a leak‑free seal that tolerates high pressures and aggressive fluids. In industrial machinery, such as gearboxes and water pumps, the robust spring ensures consistent sealing even when the shaft experiences axial movement or vibration. The seal’s compatibility with hydrocarbon fluids makes it suitable for agricultural equipment, construction machinery, and marine engines where exposure to diesel, mineral oil, and synthetic lubricants is common. Installation is straightforward: the seal slides onto the shaft, the spring expands to fill the clearance, and the metal case seats against the housing, creating an immediate seal.

Why Choose Us

Choosing the EAI TC double‑lip oil seal means selecting a product backed by rigorous quality control and engineering expertise. Each seal is manufactured in a clean‑room environment, where dimensional tolerances are verified using laser measurement systems to guarantee a perfect fit. The carbon‑steel spring undergoes heat treatment to achieve optimal hardness, ensuring long‑term resilience against fatigue. Our nitrile rubber is sourced from a certified supplier and tested for tensile strength, elongation, and resistance to swelling in oil. We provide a comprehensive warranty that covers material defects for one year, and our technical support team is available to assist with installation guidance, troubleshooting, and custom sizing requests. By partnering with EAI, customers benefit from a reliable supply chain, fast shipping, and access to engineering resources that help integrate the seal into complex assemblies.

Key Features

• Durable carbon‑steel spring maintains constant pressure for leak‑free operation.
• High‑strength nitrile rubber resists petroleum oils, hydraulic fluids, and greases.
• Double‑lip design provides dual protection against fluid loss and contaminant ingress.
• Wide temperature range from –40 °F to 226 °F ensures performance in extreme environments.
• Dedicated after‑sales support with technical assistance and a one‑year warranty.

FAQ

What shaft sizes are compatible with this seal?

The seal fits shafts with a 35 mm inner diameter. It is suitable for applications where the outer housing dimension is 52 mm and the overall thickness is 7 mm. Always verify the shaft tolerance and housing groove depth before installation.

Can this seal be used with synthetic hydraulic fluids?

Yes. The nitrile rubber compound is formulated to resist swelling and degradation when exposed to synthetic hydraulic fluids, mineral oil, and petroleum‑based lubricants.

How does the spring affect installation?

The spring expands to fill the clearance between the shaft and housing, eliminating the need for additional preload devices. During installation, simply press the seal onto the shaft until the metal case seats firmly against the housing.

What maintenance is required for the seal?

Regular visual inspection for wear, cracking, or extrusion is recommended. Replace the seal if any damage is observed. No routine lubrication of the seal itself is needed, as the nitrile coating provides the necessary oil resistance.

Is a custom size available?

EAI offers custom machining services for non‑standard dimensions. Contact our engineering team with your specifications, and we will provide a quote and lead time.