Description
Rotary Shaft Oil Seal TC 25x47x7 NBR Double Lip with Spring 25mm x 47mm x 7mm
TC 25x47x7 oil seal is built from strong NBR rubber with a rubber-covered case, double sealing lips, and a garter spring for dependable shaft sealing.
- Type: TC (rubber covered, double lip, garter spring)
- ✔️ Inside Diameter: 25mm
- ✅ Outside Diameter: 47mm
- ✅ Width: 7mm
- ✅ Material: NBR (Nitrile Butadiene Rubber)
- ✅ Temp Range: -30°C to +100°C
- ✅ Applications: gearboxes, pumps, electric motors, automotive machinery, pressure sealing
💡 Why choose a TC oil seal type?
A TC oil seal is handy for protecting rotating shafts by sealing oil in and blocking out dirt and moisture. With its spring-supported double lip, it ensures long service life in pumps, gearboxes, and motors while reducing wear and downtime.
Technical Q&A
What is a Rotary Shaft Oil Seal TC 25x47x7 NBR Double Lip with Spring 25mm x 47mm x 7mm Oil Seal?
Rotary Shaft Oil Seal TC 25x47x7 NBR Double Lip with Spring 25mm x 47mm x 7mm is a double-lip rotary shaft oil seal that blocks oil leaks and keeps contaminants out.
Sold by AVX Seals (Anaheim, California). Fast US & international shipping.
Key Benefits
- Leak prevention: Spring-loaded primary lip maintains consistent contact on the shaft.
- Contamination resistance: Dust lip helps keep out dirt and moisture.
- Durable under dynamic conditions: Designed for continuous rotation within rated speed and pressure.
- Material fit: NBR is suitable for common oils; choose FKM for higher heat/chemicals.
- Temperature capable: Rated -30 to 100 °C (verify per application).
Common Applications
- Marine shaft applications and general rotating equipment
- Hydraulic pumps & motors (low-pressure shaft sealing)
- Gearboxes, reducers, and power-transmission housings
- Automotive & motorcycle engines, crankshafts, differentials
- Agricultural & industrial machinery, electric motors, fans
Key Specifications
- Size: 25.0 × 47.0 × 7.0 mm (ID × OD × Width)
- Type: TC (TC = double lip with spring)
- Material: NBR (NBR / FKM)
- Spring: Stainless steel garter spring
- Temperature: -30 to 100 °C
- Speed (max): 14 rpm
- Pressure (max): 0.03 bar
FAQs about Rotary Shaft Oil Seal TC 25x47x7 NBR Double Lip with Spring 25mm x 47mm x 7mm Oil Seals
Q1. What does TC mean?
A1. TC indicates a double-lip design with a spring for better sealing.
Q2. What do 25.0×47.0×7.0 mean?
A2. Inner diameter, outer diameter, and width in millimeters.
Q3. How do I measure oil seal size?
A3. Measure the shaft (ID), the bore (OD), and the housing groove width (W) with calipers; match to the printed size.
Q4. How do I install a TC oil seal?
A4. Lightly oil the lips and shaft; protect threads/keys; press the seal squarely using a driver; primary lip faces the fluid.
Q5. Which way should the lips face?
A5. The primary lip faces the fluid; the dust lip faces outward to block contaminants.
Q6. What shaft surface finish and hardness are recommended?
A6. Typical Ra 0.2–0.8 µm with proper hardness and no burrs or spiral grooves; confirm per your standard.
Q7. When should I choose NBR vs FKM?
A7. NBR suits oils up to ~100 °C; FKM handles higher heat and aggressive media.
Q8. Is FKM the same as Viton?
A8. Viton® is a brand of FKM fluoroelastomer; use FKM as the generic name.
Q9. Can this seal handle pressure?
A9. Standard TC is for low pressure (up to ~0.03 bar). Use pressure-rated designs above spec.
Q10. Common causes of early failure?
A10. Misalignment, dry-running, wrong material, poor shaft finish, contamination, or over-speed/temperature.
Q11. Do I need lubrication during installation?
A11. Yes, lightly oil the lips and shaft to reduce start-up wear and friction.
Q12. Typical storage guidance?
A12. Store cool, clean, and dark; avoid ozone/UV; use within recommended elastomer shelf life.
Related Links
- See all TC oil seals (full range)
- Sizes similar to 25.0×47.0 (all widths)
- Viton®/FKM alternative in 25.0×47.0×7.0
- Reference guide to TC oil seals (selection, install, troubleshooting)
- Gearbox oil seal options (TC)
- Hydraulic motor shaft seals (TC)
- Marine shaft oil seals (TC)
Quick Reference
| Model | Rotary Shaft Oil Seal TC 25x47x7 NBR Double Lip with Spring 25mm x 47mm x 7mm |
|---|---|
| Type | TC |
| Size (mm) | 25.0×47.0×7.0 |
| Material | NBR |
| Temp Range | -30–100 °C |
| Max Speed | 14 rpm |
| Max Pressure | 0.03 bar |
| Brand | AVX Seals |
| Location | Anaheim, California, USA |