O-Ring Boss Seal, -04

O-Ring Boss Seal, -04

The OB04 O-Ring Boss Seal -04 is a precision sealing O-ring designed for ORB (O-Ring Boss) hydraulic fittings, helping create a secure, leak-resistant seal in high-pressure fluid systems. Engineered to fit -04 ORB ports, this seal compresses between the fitting and port face to prevent hydraulic fluid leaks while blocking dirt and contaminants from entering the system. Manufactured from durable elastomer material suitable for hydraulic applications, it provides dependable sealing performance in agricultural, industrial, and mechanical equipment. It’s a small component, but in hydraulic systems, the smallest seal often carries the biggest responsibility—keeping fluid where it belongs.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: OB04
• Product Type: O-Ring Boss (ORB) seal
• Size: -04
• Material: Hydraulic-grade elastomer
• Seal Type: O-Ring Boss (ORB)
• Function: Provides a leak-resistant seal in ORB hydraulic ports
• Compatibility: Designed for -04 ORB fittings and ports
• Application: Hydraulic systems, machinery, and fluid power equipment
• Design: Compressible O-ring that seals between the fitting shoulder and port face

Ideal For

• Hydraulic equipment maintenance and repairs
• Replacing worn ORB seals in hydraulic fittings
• Agricultural, construction, and industrial equipment using ORB ports
• Preventing leaks in fluid power systems
• Anyone who understands that a tiny hydraulic seal can prevent a very large cleanup job