Overview
The ReliaMark RMK26354SARM oil seal is a high-quality radial shaft seal engineered for bearing and bushing protection in industrial automation and mechanical power transmission systems. With nominal dimensions of 2.625 inches shaft diameter, 3.5 inches outer diameter, and 0.438 inches width, this seal provides a precision fit to prevent lubricant leakage and contamination ingress. ReliaMark RMK26354SARM seals are utility-tested and manufactured to strict tolerances for reliable long-term performance in general-duty applications.
Key Features
- Precision radial shaft seal design for bearing and bushing protection
- Inch-dimensioned (2.625″ × 3.5″ × 0.438″) for standard industrial applications
- Cost-effective alternative to OEM seals without sacrificing reliability
- Manufactured to uniform dimensional and heat-treat standards
- Compatible with general-duty machinery in manufacturing and maintenance environments
Technical Specifications
- Shaft Diameter (ID): 2.625 inches
- Outer Diameter (OD): 3.5 inches
- Width (W): 0.438 inches
- Part Number: RMK26354SARM / 26354
- Seal Type: Radial shaft seal
- Pressure Rating: General-duty (low-pressure)
- Material: Elastomer lip with metal case (standard)
- Manufacturer: ReliaMark (Kaman Division)
Typical Applications
The ReliaMark RMK26354SARM is suited for:
- Shaft sealing in mounted ball bearing assemblies
- Bushing protection in general-purpose rotating equipment
- Oil and grease retention in motor, pump, and fan bearings
- Maintenance replacement (MRO) in industrial machinery
- Cost-sensitive applications requiring reliable contamination control
Compatibility & Replacements
Compatible With
- Standard industrial bearing housings with 2.625″ shaft diameter
- General-duty power transmission equipment
- Cast iron and stamped steel bearing mounts
- Oil and grease-lubricated shaft applications
Replaces / Drop-In Replacement For
The RMK26354SARM is a direct replacement for other 2.625″ × 3.5″ × 0.438″ radial shaft seals in standard inch dimensions. Verify compatibility with your equipment’s bearing housing before installation.
Works With
- Mounted ball bearing assemblies (ReliaMark and equivalent)
- Standard mechanical power transmission systems
- Industrial conveyor, motor, and pump applications
- General-purpose machinery requiring cost-effective MRO seals
















