140x170x21/22.7 mm Wheel Hub Oil Seal NBR, Construction Machinery Stepped Rotary Shaft Seal

Product Overview

A 140 x 170 x 21/22.7 mm hub seal is used on wheel loader wheel ends and axle positions, where it keeps axle oil in and keeps the mud, grit and wash water of a working site out of the bearing. This one has a rubber-covered outer diameter and a stepped 21 mm / 22.7 mm body that seats on the housing step.

At a glance:

140x170x21/22.7 mm | NBR (nitrile butadiene rubber) | single lip with a garter spring, rubber-covered outer diameter, stepped 21 mm / 22.7 mm body | made in Xingtai, Hebei, China | working range -30 C to +100 C (short peaks to +120 C)

VKEFOT makes this size in Xingtai, Hebei, China for parts distributors who supply wheel loader fleets such as the LW500HV, LW500KV, LW600FV and LW600KV series, and for repair programmes that buy by dimension. Machines in one family share some sizes but not all, so measure the shaft, the bore and the depth before ordering.

Key Features & Benefits

• Built for dirty duty: The lip and the outer diameter are sized to hold a seal face against the mud, dust and wash water that reach a loader wheel end every shift.
• Stepped body 21 mm / 22.7 mm: The two heights let the seal seat on the housing step and hold the lip at the correct running position, so a single-height seal is not a substitute.
• Spring-loaded lip: A garter spring keeps the lip loaded on the spindle as it wears, which is what stops a slow weep from turning into a wet hub.
• Rubber-covered outer diameter: The rubber skin around the case takes up small bore marks on a housing that has already had several seal changes.
• Matched to loader models: The size is shared across the LW500HV, LW500KV, LW600FV and LW600KV series, but the measurement on the machine still decides the fit.
• Spare parts flow: Where this size is held as a standard, a wheel end can go back into service without waiting for a special production run.

Dimensions & Specification

Specification	Value
Inner Diameter (ID)	140 mm
Outer Diameter (OD)	170 mm
Width / Height	21 mm / 22.7 mm
Material	NBR (nitrile butadiene rubber)
Colour	Black outer body with a brown sealing lip
Structure	Single lip, garter spring, rubber-covered outer diameter, stepped overall width
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: 140 mm inner diameter, 170 mm outer diameter, and a stepped height of 21 mm and 22.7 mm. Confirm both heights and the housing bore on the machine before releasing an order.

Material & Construction

The sealing lip is moulded from NBR (nitrile butadiene rubber), which stands up to axle oil, grease, water splash and the fine grit found on a construction site. It covers -30 C to +100 C (short peaks to +120 C) and keeps enough elasticity to follow a spindle with slight runout. A garter spring holds the lip on the shaft and the outer diameter is rubber covered so it seals and grips the housing bore. Where site duty pushes temperatures higher, or the machine uses a synthetic lubricant, the same 140 x 170 x 21/22.7 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, rubber-to-case bond, lip geometry, spring seating and the stepped body profile checked at set intervals.
• Final: measured inner diameter, outer diameter and both heights, 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; tell us in the enquiry so the requirement goes 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: 140 x 170 x 21/22.7 mm, or the number stamped on the seal you are replacing.
2. Quantity and destination: required quantity, destination country and port.
3. Material requirement: NBR as standard, or FKM where site duty runs hotter or the lubricant is synthetic.
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 stepped body.
6. Operating conditions: machine model, axle oil type, working temperature and shaft speed, if known.

Frequently Asked Questions

How do I confirm this seal fits my assembly?
Measure the spindle, the bore in the hub or axle housing and the depth of the recess, then check both heights of the stepped body against the seal you removed. On site, clean the housing first, because packed mud hides the shoulder.

What are the exact dimensions of this oil seal?
140 mm inner diameter, 170 mm outer diameter, and a stepped height of 21 mm and 22.7 mm. Confirm both heights on the machine, because the housing recess depth decides whether the lip sits in the right place.

What is the minimum order quantity?
MOQ depends on whether this size is a stocked standard or made to order. Tell us the quantity you need and we will confirm the MOQ with tiered pricing in the quotation.

What is the lead time, and can you ship by sea or air?
Standard sizes normally ship within 7 to 15 working days after order confirmation, and longer for sizes that are not held. 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 also be produced in FKM (fluoroelastomer) or HNBR for higher working temperature or for particular lubricants. Confirm the compound at the enquiry stage.

Do you provide samples, and are they free?
Samples can be arranged for evaluation. The sample and its freight are quoted per request; on a confirmed bulk order the sample charge is normally set off against the order value.

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

What information do you need to quote?
The size or the number on your old seal, the machine model, quantity, lubricant type, working temperature, packaging and marking requirement, destination port and preferred Incoterm. A drawing or a sample is the surest way to match a stepped seal.

Request a Quotation

Send the 140 x 170 x 21/22.7 mm size (or the number on the seal you are replacing), the machine model, the quantity and your destination, and we will come back with MOQ, lead time, packing details and pricing.

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