101x125/130x13.5/21.5 mm Wheel Hub Oil Seal NBR, Stepped Double Diameter Rotary Shaft Seal

Product Overview

A 101 x 125/130 x 13.5/21.5 mm hub oil seal is a two-diameter part: the 130 mm shoulder locates in the wider counterbore of the hub or axle housing while the 125 mm section carries the lip and the dirt exclusion. It keeps hub oil and bearing grease in and holds water and mud out of the bearing.

At a glance:

101x125/130x13.5/21.5 mm | NBR (nitrile butadiene rubber) | single lip with a garter spring, rubber-covered two-step outer diameter | made in Xingtai, Hebei, China | working range -30 C to +100 C (short peaks to +120 C)

VKEFOT moulds this size in Xingtai, Hebei, China in a blue nitrile compound for repair shops, wholesalers and MRO buyers who order by dimension. Confirm both bore diameters and both heights against your housing before ordering, because a single-diameter seal is not a substitute for a stepped one.

Key Features & Benefits

• Two diameters in one part: The stepped outer diameter seats in a housing with a wide counterbore and a smaller bore behind it, so one part covers both bores and no spacer ring is needed.
• Blue nitrile compound: NBR in this compound handles hub oil, grease and water splash, and the blue colour makes the part easy to identify on a shelf or in a repair kit.
• Rubber-covered outer diameter: The rubber skin outside the case seals against both bores and takes up small housing marks that a bare metal case would leak past.
• Spring-loaded lip: A garter spring holds the 101 mm lip on the shaft as it wears, so sealing force stays steady after the lip has bedded in.
• Stepped height 13.5 mm / 21.5 mm: The two heights let the seal sit on a machined step and still reach the correct lip position along the shaft.
• Matched by measurement: It is selected by the two bore diameters, the shaft and the two heights on your own assembly, so measure before ordering instead of relying on the model name.

Dimensions & Specification

Specification	Value
Inner Diameter (ID)	101 mm
Outer Diameter (OD)	125 mm / 130 mm
Width / Height	13.5 mm / 21.5 mm
Material	NBR (nitrile butadiene rubber)
Colour	Blue
Structure	Single lip, garter spring, rubber-covered two-step outer diameter
Seal Type	Wheel hub oil seal
Marking	VKEFOT
Continuous Service Temperature	-30 C to +100 C (short peaks to +120 C)
Brand	VKEFOT
Origin	Xingtai, Hebei, China

Dimensions are nominal production values. The outer diameter is stepped at 125 mm and 130 mm, and the height is stepped at 13.5 mm and 21.5 mm. Measure both bores and both heights on your housing before releasing an order.

Material & Construction

The sealing element is moulded from NBR (nitrile butadiene rubber) in a blue compound for hub oil, grease and water splash duty. It covers -30 C to +100 C (short peaks to +120 C) and keeps enough flexibility to follow a shaft with small runout. A garter spring holds the lip against the shaft, and the outer diameter is rubber covered so the stepped body seals in both bores. If the duty runs hotter or the lubricant is synthetic, the same 101 x 125/130 x 13.5/21.5 geometry can be quoted in FKM (fluoroelastomer, also written FPM), which holds continuous duty to about +200 C.

Quality Control and Inspection

• Incoming: compound hardness checked before release to production.
• In process: case concentricity, both outer diameter steps, lip geometry and spring seating checked at set intervals.
• Final: measured inner diameter, both outer diameters, both heights and compound hardness, then a visual check on the lip edge and the marking, then packing count verification.
• Traceability: inspection results for each batch are recorded and kept; the inspection scope can be agreed before order confirmation.

Third-party inspection before shipment can be arranged; state the requirement in the enquiry so it can be built into the quotation.

Customization and OEM Service

packaging and logo available upon request

Packaging, Carton and Delivery

Standard packing is individual polybag, inner carton, then export carton. Carton marks, labels and barcodes are printed to buyer specification.

Lead time for standard sizes is typically 7 to 15 working days after order confirmation, and longer for sizes that are not held as standard stock. Minimum order quantity depends on whether the size is a stocked standard or made to order. Pricing, MOQ, freight and trade terms are confirmed in the written quotation. Send an RFQ with quantity and destination port.

How to Order

The more of this you include, the faster and more accurate the quotation:

1. Size or OE number: 101 x 125/130 x 13.5/21.5 mm, or the number stamped on the seal you are replacing.
2. Quantity and destination: required quantity, destination country and port.
3. Material requirement: blue NBR as standard, or FKM where the hub runs hotter or uses a synthetic lubricant.
4. Marking and packaging requirement: label data, carton marks and barcode requirement.
5. Sample photo or drawing: where the part is matched from a worn original, especially for the two-step body.
6. Operating conditions: lubricant type, hub running temperature and shaft speed, if known.

Frequently Asked Questions

How do I confirm this seal fits my assembly?
Measure the shaft, then measure both bores of the housing and both depths of the counterbore, and compare them with the seal you removed. This is a two-diameter seal, so a single-diameter part will not do the same job.

What are the exact dimensions of this oil seal?
101 mm inner diameter, an outer diameter stepped at 125 mm and 130 mm, and a height stepped at 13.5 mm and 21.5 mm. Confirm all of them against your own sample or housing drawing.

What is the minimum order quantity?
MOQ depends on whether this stepped size is a stocked standard or made to order. Give your required quantity and we will confirm the MOQ and tiered pricing in the quotation.

What is the lead time, and can you ship by sea or air?
Stocked sizes normally leave within 7 to 15 working days of order confirmation, and longer for sizes that are not held as standard. Sea and air freight are both arranged, with cost and transit time confirmed per destination.

Can you supply FKM or HNBR instead of NBR?
Yes. This geometry can be produced in FKM (fluoroelastomer) or HNBR where the running temperature or the lubricant is outside the NBR range. Confirm the compound at the enquiry stage.

Do you provide samples, and are they free?
Evaluation samples can be arranged. Sample cost and freight are quoted per request, and on a confirmed bulk order the sample charge is normally offset against the order value.

Can you produce our packaging and logo?
packaging and logo available upon request.

What information do you need to quote?
Both bore diameters, the shaft diameter, both depths, quantity, lubricant type, marking and packaging requirement, destination port and preferred Incoterm. A drawing is the surest way to quote a stepped seal correctly.

Request a Quotation

Send the 101 x 125/130 x 13.5/21.5 mm size (or the number on the seal you are replacing), the quantity, your destination and any branding requirement, and we will reply with MOQ, lead time, packing details and pricing.

VKEFOT Seals: oil seals, O-rings and custom rubber parts. Xingtai, Hebei, China.