Mr O-Ring Piston/Rod U-Cup Seal – Sq Lip, 95 Duro TPU, 70 Duro O-Ring

Description

Product Overview

The Mr O‑Ring Piston/Rod U‑Cup Seal is a precision‑engineered component designed for high‑performance sealing in strapping, hydraulic, and pneumatic systems. Constructed with a 95 durometer TPU (thermoplastic polyurethane) shell, the seal offers exceptional resistance to abrasion, oil, and temperature extremes, ensuring durability in the toughest industrial environments. The integrated 70 durometer O‑Ring provides an additional barrier against pressure spikes, while the square straight lip design delivers a consistent, leak‑free interface with mating hardware. This combination of materials and geometry results in a seal that maintains its integrity over prolonged service life, reducing the need for frequent replacements and minimizing system downtime.

Usage

Designed for versatility, this U‑Cup seal fits a wide range of applications where reliable sealing is critical. It excels in strapping machines that require precise pressure control to secure loads, as well as in hydraulic cylinders and pneumatic actuators where fluid containment is essential. The seal’s compact dimensions (0.75″ ID x 0.125″ CS) allow it to be used in tight spaces without compromising performance. Engineers and maintenance technicians appreciate its straightforward installation—simply press the seal onto the piston or rod, and the square lip ensures proper alignment. Whether you are assembling new equipment or retrofitting existing machinery, this seal provides the confidence that your system will operate smoothly under demanding conditions.

Why Choose Us

Choosing the Mr O‑Ring Piston/Rod U‑Cup Seal means selecting a product backed by rigorous quality control and a reputation for reliability. Manufactured by Mr O‑Ring, a trusted name in sealing technology, each seal undergoes comprehensive testing to verify material hardness, dimensional accuracy, and leak performance. The 95 durometer TPU shell is formulated to resist chemical exposure and mechanical wear, while the 70 durometer O‑Ring is calibrated for optimal compression set, ensuring a tight seal even after repeated cycles. Our commitment to customer satisfaction includes responsive technical support, detailed installation guidance, and a warranty that reflects our confidence in the product’s longevity.

Key Features

• Square straight lip delivers consistent, leak‑free sealing for precise load control.
• 95 durometer TPU shell provides superior abrasion and chemical resistance.
• 70 durometer O‑Ring adds extra protection against pressure fluctuations.
• Compact 0.75″ ID x 0.125″ CS size fits tight spaces without sacrificing performance.
• Backed by Mr O‑Ring’s expert technical support and comprehensive warranty.

FAQ

What materials are compatible with this seal?

The seal is compatible with most hydraulic oils, synthetic lubricants, and pneumatic gases. Its TPU construction resists oil, water, and many chemicals, making it suitable for a broad range of industrial fluids.

Can this seal be used in high‑temperature environments?

Yes. The TPU shell is rated for continuous operation up to 140 °F (60 °C) and short‑term exposure to higher temperatures, ensuring reliable performance in heated applications.

How do I install the seal correctly?

Installation is straightforward: clean the piston or rod surface, align the square lip with the mating groove, and press the seal into place until it seats fully. No additional tools are required, and the design prevents misalignment.

What is the expected service life of the seal?

When used within the specified operating conditions, the seal typically lasts for thousands of cycles. Its high durometer rating and robust O‑Ring design minimize wear and compression set, extending service intervals.

Do you offer technical assistance for custom applications?

Absolutely. Our engineering team can provide guidance on selecting the right seal size, material options, and installation procedures for unique or custom‑designed equipment.