100x152x20/24 mm Differential Oil Seal NBR, Heavy Truck Axle Stepped Rotary Shaft Seal

Product Overview

A 100 x 152 x 20/24 mm differential oil seal sits at the pinion or output shaft of a heavy truck axle differential. It holds gear oil inside the unit and keeps dust, water and road grit out of the bearing. This one has a rubber-covered outer diameter with moulded notches, and a stepped body that measures 20 mm at one shoulder and 24 mm overall.

At a glance:

100x152x20/24 mm | NBR (nitrile butadiene rubber) | single lip with a garter spring, rubber-covered outer diameter, stepped 20 mm / 24 mm body | made in Xingtai, Hebei, China | working range -30 C to +100 C (short peaks to +120 C)

VKEFOT produces this size in Xingtai, Hebei, China for workshops and parts wholesalers who service Dongfeng heavy truck axle and differential units and who buy by dimension. The shaft the seal runs on, the 152 mm bore in the housing and the depth behind the flange decide the fit, so measure the unit before ordering.

Key Features & Benefits

• Rubber-covered outer diameter: The rubber outside the case seals and grips the bore, so small machining marks in an axle housing are less likely to become a leak path than they are with a bare metal case.
• Moulded notches on the outer diameter: The notches key the seal against its housing location, so it cannot creep round with the shaft under axle torque.
• Stepped body 20 mm / 24 mm: The two-step profile matches housings that have a shoulder or a recess: the seal seats on the deeper face and still presents the lip at the correct running position.
• Spring-loaded nitrile lip: A garter spring keeps the brown NBR lip against the shaft as it wears, and NBR is at home in the mineral gear oils used in truck differentials.
• Sized for axle duty: The 100 mm shaft, the 152 mm bore and the 20/24 mm depth are the values that decide whether a unit will take this seal, so the part is selected by measurement rather than by model name.
• Workshop fitting: Press it in square until it seats on the step, keep the lip lightly oiled, and check the notches line up; no special fitting aids are needed.

Dimensions & Specification

Specification	Value
Inner Diameter (ID)	100 mm
Outer Diameter (OD)	152 mm
Width / Height	20 mm / 24 mm
Material	NBR (nitrile butadiene rubber)
Colour	Brown
Structure	Single lip, garter spring, rubber-covered outer diameter with moulded notches, stepped overall width
Seal Type	Differential 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, given as inner diameter x outer diameter x width, with the stepped height shown as 20 mm / 24 mm. Confirm both heights and the bore against your own sample or housing before releasing an order.

Material & Construction

The lip is moulded from NBR (nitrile butadiene rubber), which resists the mineral gear oils and hypoid additives used in truck axle differentials. It works from -30 C to +100 C (short peaks to +120 C) and keeps enough elasticity to follow a shaft with slight runout. The lip is held by a garter spring and the case is rubber covered so the outer diameter seals as well as grips. Where a unit runs hotter, or the oil is a synthetic with a heavy additive package, the same 100 x 152 x 20/24 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 and rubber-to-case bond, lip geometry, spring seating and the notched outer diameter profile checked at set intervals.
• Final: measured inner diameter, outer diameter and both heights, compound hardness, then a visual check on the lip edge, the notches 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: 100 x 152 x 20/24 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 for higher oil temperature or synthetic axle 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 stepped body.
6. Operating conditions: axle oil type, running temperature and shaft speed, if known.

Frequently Asked Questions

How do I confirm this seal fits my assembly?
Measure the shaft, the bore in the differential housing and the depth behind the flange, then check both heights of the stepped body against the seal you removed. All four values have to match.

What are the exact dimensions of this oil seal?
100 mm inner diameter, 152 mm outer diameter, and a stepped width of 20 mm at the shoulder and 24 mm overall. Confirm both heights on your own sample, because housing shoulders differ between axle units.

What is the minimum order quantity?
MOQ depends on whether 100x152x20/24 is a stocked size or made to order. State 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 as standard. Sea and air freight are both arranged; cost and transit time are confirmed per destination.

Can you supply FKM or HNBR instead of NBR?
Yes. The same geometry can be produced in FKM (fluoroelastomer) or HNBR where the gear oil or the running temperature exceeds what NBR will take. Confirm the compound when you enquire.

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, quantity, axle oil type, working temperature, packaging and marking requirement, destination port and preferred Incoterm. A drawing or a sample removes any doubt about the stepped body.

Request a Quotation

Send the 100 x 152 x 20/24 mm size (or the number on the seal you are replacing), the quantity, your destination and any branding requirement, 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.