Metric Oil Shaft Seal 35 x 48 x 8mm, Buna-N Nitrile, Single Lip (1.378" x 1.890" x 0.315") - Spring-Loaded Radial Lip Seal

FINAL SALE - NO RETURNS. THIS IS A STANDARD CATALOGUE SIZE; CONFIRM YOUR DIMENSIONS AND MATERIAL BEFORE ORDERING.

Because standard sizes are chosen by measurement rather than by machine model, they ship as final sale. If we send the wrong item, or it arrives damaged or defective, we replace it free of charge, and that never changes.

Is oil or grease weeping out where a shaft leaves a gearbox, motor, pump, axle or wheel hub? A hardened or worn lip seal lets lubricant out and dirt and water in, and the bearings behind it are what pay for it.

This Beaver Island Parts Company part is a radial lip seal (also called an oil seal, grease seal or rotary shaft seal) with a spring-loaded sealing lip that keeps constant contact with the rotating shaft, measuring 35 x 48 x 8mm (1.378" x 1.890" x 0.315"), made with Buna-N Nitrile.

Specifications

What It Fits

Used in gearboxes and speed reducers, electric motors, pumps, hydraulic motors, axles and wheel hubs, PTO shafts, compressors, and agricultural and industrial machinery. If your parts list or the old seal reads 35 x 48 x 8mm, this is the size.

Design and Material

The Buna-N Nitrile lip is rated -40°F to +250°F. Buna-N is the all-round workhorse of sealing: tough, abrasion resistant and the right default for oil, hydraulic and water service.

You Can Do This Repair

Clean the bore and inspect the shaft where the lip runs; if a groove is worn in, move the lip with a speedi-sleeve or by seating the seal slightly deeper. Lightly oil the lip, face the spring side toward the fluid, and press the seal in square using a seal driver or a socket that bears on the outer case. Never hammer directly on the seal.

Pro Tip: Cover keyways and splines with tape before sliding the seal over them so the lip is not cut.

Shipping: This part is special-ordered and packed for you. It ships from our facility in about 10 business days, then transits by the carrier service you choose at checkout. The estimated delivery date shown on this page includes that lead time.

Why Buy From Beaver Island Parts Company

• Every dimension published. Size, material, hardness and temperature rating are listed up front so you can confirm fit before you buy, not after.
• Inspected, packed and labeled by us. Each order is checked and repacked in a bag labeled with the part's size and material, so it never gets lost in a parts bin.
• Real people who answer fitment questions. We are an American family-owned and operated small business. Send us your measurements or model number and we will help you confirm the right part.
• Replacement guarantee. If we ship the wrong item, or it arrives damaged or defective, we replace it free of charge.

Frequently Asked Questions

Q: How do I know this is the right size?
A: Seals are sized by measurement: shaft / inside diameter, bore / outside diameter and width / height. Measure the shaft and bore, not just the old seal, which may be worn or distorted. This part measures 35 x 48 x 8mm.

Q: Can I do this repair myself?
A: Yes, with basic hand tools and patience. Clean everything, work without sharp tools near the sealing lips, lubricate before assembly, and press seals in square. The installation notes above walk through the key steps.

Q: When will it ship?
A: It ships from our facility in about 10 business days, then transits by the carrier service you choose.