Radial Oil Seal 12x22x7 NBR TC - Shaft Seal

​

Applications in Industrial & Automotive Environments

The radial oil seal 12x22x7 mm made of NBR (nitrile-butadiene rubber) with a TC double-lip design is purpose-built for rotary shaft sealing in demanding applications. Typical industrial search terms include “oil seal 12x22x7”, “radial shaft seal double lip NBR”, “12x22x7 oil seal industrial”, and “double lip TC seal ring 12mm”.
This shaft sealing ring is ideal for hydraulic pumps, gearboxes, electric motors, reducers, agricultural machinery and various rotating equipment. It ensures protection of the bearing unit and effectively excludes contamination by dust and moisture, while retaining oil and grease under dynamic operation.

Key Advantages of the Double-Lip Design

• Double-lip (TC) construction: The primary sealing lip maintains contact with the shaft to retain lubrication, while the secondary lip acts as a dust exclusion barrier—enhancing the durability of the rotary seal and preventing ingress of abrasive particles.

• NBR material for high chemical resistance: The nitrile rubber compound offers excellent resistance to oils, greases, fuels and hydraulic fluids, making the seal fit for both industrial and automotive environments.

• Compact yet reliable dimensions (ID 12 mm x OD 22 mm x Width 7 mm): These standardized dimensions make the seal easily integrable into existing machine units, reducing downtime and simplifying maintenance.

• High durability for continuous operation: With its combination of material, sealing lip design and metal-reinforced outer case, this oil seal delivers high durability, minimal leakage and extended service life—even under heavy load or moderate misalignment.

Technical Data & Key Specifications

• Inside Diameter (ID): 12 mm

• Outside Diameter (OD): 22 mm

• Width: 7 mm

• Seal Type: Radial oil seal (rotary seal)

• Lip Configuration: Double-lip (TC design)

• Material: NBR (nitrile-butadiene rubber) with metal reinforcement

• Typical operating temperature: approximately -30 °C to +100 °C (short term peaks up to ~+120 °C)

• Ideal for both static and dynamic sealing applications in oil, grease and mixed lubrication environments

• Frequently searched keywords: radial oil seal 12x22x7, double lip oil seal NBR, shaft sealing ring 12 mm industrial, rotary seal 12x22x7 oil resistance

FAQ

Q1: What is the difference between a single-lip and a double-lip oil seal?
A1: A single-lip seal uses one sealing lip to retain oil or grease. A double-lip (TC) design includes a second lip to prevent dust, dirt and moisture from entering the system, increasing longevity especially in harsh environments.

Q2: Why choose NBR material for this seal?
A2: NBR (nitrile rubber) is selected for its high resistance to mineral oils, greases, fuels and hydraulic fluids. It offers reliable performance in many industrial and automotive applications where chemical exposure is high.

Q3: How do I select the correct radial oil seal size?
A3: Match the inside diameter (shaft size), outside diameter (housing bore) and width to your application. For example, 12x22x7 mm means a 12 mm shaft, 22 mm housing bore and 7 mm height.

Q4: Can this oil seal be used for high-temperature applications?
A4: The NBR version typically supports -30 °C to +100 °C continuously, with short-term peaks to around +120 °C. For higher temperatures or chemically aggressive media, alternative materials like FPM/Viton may be required.

Q5: What industries commonly use this type of seal?
A5: This radial oil seal is used in hydraulics, pneumatics, gearboxes, agricultural equipment, automotive engines and transmissions, electric motors and general industrial machines.