Product Overview

This product is a 45×65×15 mm Combi radial shaft seal, made of high-quality NBR rubber and a metal reinforced structure, designed for sealing rotating shafts and housings to prevent oil leakage and block contaminants.

Main Features & Specifications

• Inner Diameter (ID): 45 mm

• Outer Diameter (OD): 65 mm

• Width / Thickness: 15 mm

• Type: Combi / Double Lip Type

• Sealing Lips: 1 main lip + 1 dust lip

• Dust Lip: Included

• Spring Type: Garter spring

• Reinforcement: Metal skeleton

• Sealing Material: NBR (Nitrile Rubber)

• Outer Structure: Rubber-Metal Composite

• Rubber Hardness: Approx. 70 Shore A

• Temperature Range: -40 °C to +100 °C

• Max. Shaft Speed: Varies per application, typically up to several m/s

• Max. Pressure: Up to 0.05 MPa

• Standard Compliance: DIN 3760 / ISO

• Compatible Media: Mineral oils, greases

• Wear Resistance: Excellent

• Oil & Chemical Resistance: Good

• Ozone & Aging Resistance: Limited (NBR specific)

• Friction Performance: Low friction design

• Dynamic Sealing: Yes

• Static Sealing: Yes

• Contaminant Resistance: High (dust, water, dirt)

• Installation Tolerance: Bore H8 / Shaft h11

• Shaft Surface Roughness: Ra 0.2 – 0.8 μm

• Shaft Hardness: ≥ 45 HRC recommended

• Service Life: Long-lasting under proper conditions

• Brand / Model: COMBISF1 / DMHUI

• Country of Origin: China

• Production Code / Date: Marked on packaging

• Packing Quantity: 6 pcs / box

• Sealing Direction: Radial

• Rotation Compatibility: Bi-directional

• Installation Depth: Defined by housing design

• Surface Treatment: May include lubricated finish

• Weight: Lightweight design

• Replacement Compatibility: Fits standard dimensions

• Application Fields: Gearboxes, pumps, motors, agricultural and construction machinery

• Pressure Adaptability: Suitable for low-pressure sealing

• Lip Geometry: Engineered for optimal sealing

• Spring Tension: Ensures firm shaft contact

• Shell Compliance: Allows for installation tolerance

• Customizable Sizes: Available upon request

• Certifications: ISO compliant on request

• Packing Form: Boxed or bulk

• Speed Rating: Suitable for medium-speed rotation

• High Temp Durability: Limited at extreme temps

• Lip Wear Compensation: Maintains sealing with minor wear

Advantages

1. Combi structure with dual-lip design for enhanced sealing
2. NBR material for oil and abrasion resistance
3. Garter spring for consistent shaft contact
4. Wide operating temperature range
5. Easy installation and replacement
6. Highly reliable in harsh environments
7. Custom sizes available on demand
 

Applications

Widely used in agricultural machinery, construction equipment, gearboxes, pumps, drive shafts, and industrial powertrain systems.