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SKF Rotary Shaft Seal: 1 Lip w/Spring, HMS4, Nitrile, 1.25 in ID, 1.752 in OD - Single-Lip Oil Seals with Rubber-Enclosed Cases for Rough Bores
SKFSingle-Lip Oil Seals with Rubber-Enclosed Cases for Rough Bores

SKF Rotary Shaft Seal: 1 Lip w/Spring, HMS4, Nitrile, 1.25 in ID, 1.752 in OD

The SKF Rotary Shaft Seal is a single-lip oil seal with a rubber-enclosed case for rough bores, featuring an HMS4 seal design. This inch-system seal has a 1.25-inch inner diameter, a 1.752-inch outer diameter, and a…

SKU 3G-OTH-122726

Brand
SKF
Item
Rotary Shaft Seal: 1 Lip w/Spring, HMS4, Nitrile, 1.25 in ID, 1.752 in OD
Category
Single-Lip Oil Seals with Rubber-Enclosed Cases for Rough Bores
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Technical Specifications

SKF
Manufacturer Part Number
12371
Type
HMS4, Nitrile
OD
1.752 in
Wd
0.313 in
ID
1.25 in
Seal Design
HMS4
System of Measurement
Inch
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SKF Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SKF Rotary Shaft Seal is a single-lip oil seal with a rubber-enclosed case for rough bores, featuring an HMS4 seal design. This inch-system seal has a 1.25-inch inner diameter, a 1.752-inch outer diameter, and a 0.313-inch width, constructed from nitrile material with a spring-loaded lip (MPN 12371).

Frequently Asked Questions

What is the SKF Rotary Shaft Seal 12371 used for?

The SKF Rotary Shaft Seal 12371 is a single-lip oil seal with a rubber-enclosed case designed for rough bores. It prevents lubricant leakage and contaminant ingress in rotating shafts, commonly used in industrial gearboxes, pumps, and motors where inch-dimension seals are required.

What are the specifications of the SKF Rotary Shaft Seal 12371?

The SKF Rotary Shaft Seal 12371 has a 1.25-inch inner diameter, 1.752-inch outer diameter, and 0.313-inch width. It features an HMS4 seal design, a nitrile material with a spring-loaded lip, and is part of SKF's single-lip oil seal range for inch-system applications.

Where to buy the SKF Rotary Shaft Seal 12371 worldwide?

3G Electric supplies the SKF Rotary Shaft Seal 12371 worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this SKF seal to any country.

How to install the SKF Rotary Shaft Seal 12371?

To install the SKF Rotary Shaft Seal 12371, ensure the bore is clean and free of burrs. Use a seal driver or press to apply even force on the outer case, seating the seal squarely. Lubricate the lip with compatible oil before installation to prevent dry start damage.

Used in

Common applications for SKF
Heavy machinery gearboxes — SKF spherical roller bearings (e.g., 24056 CCK30/W33) for high radial load capacity
Electric motor repair — SKF cylindrical roller bearings (e.g., NJ 307 ECP/C3) for free axial expansion
Pump shaft sealing — SKF CRWA1 rotary shaft seals (e.g., 17100) for fluid retention in rotating equipment
Conveyor system maintenance — SKF wear sleeves (e.g., 99274) to protect shafts from seal abrasion
Machine tool spindles — SKF angular contact bearings (e.g., 7413 BGBM) for axial load support in duplex sets
Industrial fan assemblies — SKF spherical roller bearings (e.g., 23044 CC/W33) for misalignment accommodation

SKF Products

3G Electric supplies SKF single-lip oil seals with rubber-enclosed cases for rough bores. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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