Shaft Oil Seal TC 3/4"x 1 1/4"x 5/16" Inch Rubber Covered Double Lip w/Garter Spring

Rotary Shaft Oil Seal | Double Lip | Shaft Diameter (3/4" Inch) x Bore Diameter (1 1/4" Inch) x Width (5/16" Inch) | Nitrile Rubber Lip Material.

Product Overview:

The Rotary Shaft Oil Seal – Double Lip is designed for precision sealing in rotating shaft applications. Sized for a 3/4" shaft and a 1-1/4" housing bore, this compact 5/16" wide seal offers superior protection with a double lip configuration—one lip retains lubricants, while the other blocks contaminants like dirt and moisture. The Nitrile Rubber (NBR) material is resistant to a wide range of fluids, making this seal highly versatile for small-to-medium industrial and automotive systems.

• Brand : AVX
• Item Sku : TC3/4"x 1 1/4"x 5/16"
• Type : TC 3/4"x 1 1/4"x 5/16" Inch
• Inner : 3/4" Inch
• Outer : 1 1/4" Inch
• Width : 5/16"Inch
• Size : 3/4" x 1 1/4" x 5/16"
• Seal Material : Nitrile Butadiene Rubber
• Temperature Range : -40° to 248°F

Applications: Shaft Oil Seal

• Small Electric Motors – Seals motor shafts against dust and oil leakage.

• Light-Duty Gearboxes – Retains grease and prevents ingress of dirt or moisture.

• Power Tools and Machinery – Protects internal components in rotating systems.

• Farm and Garden Equipment – Withstands outdoor contaminants and fluids.

• Pumps and Compressors – Prevents lubricant loss and fluid contamination.

• Compact Hydraulic Systems – Maintains internal fluid sealing in confined assemblies.

Questions & Answers: 

Q1: Why is a double lip seal preferred in dusty or dirty environments?

A1: The double lip design includes a secondary dust lip that blocks contaminants from entering the system, which enhances reliability in challenging environments.

Q2: What makes Nitrile Rubber suitable for this seal?

A2: NBR is resistant to petroleum-based oils, hydraulic fluids, and some chemicals, and performs well in temperatures from -40°C to +120°C, making it ideal for standard industrial applications.