98x120x10 mm Skeleton Rotary Shaft Oil Seal NBR, Black Lip Seal

Product Overview

This 98 x 120 x 10 mm skeleton seal is built on a steel frame with the rubber moulded around it. The frame keeps the shape during pressing and in service, while the lip runs on the shaft and holds lubricant inside a hub, axle or transmission housing.

At a glance:

98x120x10 mm | NBR (nitrile butadiene rubber) | single lip, garter spring, steel skeleton body | made in Xingtai, Hebei, China | working range -30 C to +100 C (short peaks to +120 C)

The single lip is loaded by a garter spring and the outer body seals against the bore. Because the frame is rigid, the seal keeps its round where housings are deep and the fitting force is high.

Key Features & Benefits

• Skeleton frame resists pressing: The steel frame stops the body from distorting when the seal is driven into a deep bore, which protects the lip from damage.
• Steady lip force: Spring loading keeps the sealing edge against the shaft as it wears, so seepage does not start halfway through the service interval.
• Bore seal as well as shaft seal: The moulded outer surface closes the static path between seal and housing, so oil cannot travel around the case.
• Built for heavier units: At this diameter the seal normally sits on an axle or hub, where the rigid frame tolerates vibration and load reversal.
• Retrofittable by size: Round size, taken from a measured shaft and bore, so a repair does not depend on a parts catalogue number.
• Clean installation: A square press fit with a lightly lubricated lip is all the fitting procedure needs.

Dimensions & Specification

Specification	Value
Inner Diameter (ID)	98 mm
Outer Diameter (OD)	120 mm
Width / Height	10 mm
Material	NBR (nitrile butadiene rubber)
Colour	Black
Structure	Single lip, garter spring, steel skeleton body
Seal Type	Rotary shaft oil seal
Marking	VKEFOT
Continuous Service Temperature	-30 C to +100 C (short peaks to +120 C)
Brand	VKEFOT
Origin	Xingtai, Hebei, China

All figures are nominal and are given as inner diameter x outer diameter x width. Confirm them against the part being replaced or a measured shaft and bore before releasing an order.

Material & Construction

NBR (nitrile butadiene rubber) forms the lip and the outer seal element, bonded onto a steel skeleton. NBR is the practical choice for wheel, axle and gearbox duty: it resists mineral and gear oil, works from -30 C to +100 C with short peaks to +120 C, and takes light shaft run out with the help of the garter spring. The steel skeleton supplies the stiffness that a plain rubber body would lack at this diameter. For a unit running hotter, or on synthetic lubricant, the same 98 x 120 x 10 size is available in FKM at continuous duty to about +200 C.

Quality Control and Inspection

• Incoming: compound hardness checked before release to production.
• In process: skeleton flatness and concentricity, bond strength, lip geometry and spring seating checked at set intervals.
• Final: measurement of inner diameter, outer diameter and width, hardness, lip edge and skeleton inspection, marking check, then packing count verification.
• Traceability: inspection results for each batch are recorded and kept; the inspection scope can be agreed before order confirmation.

A pre shipment inspection by the buyer or a third party is accepted; mention it in the enquiry so it is priced and booked into the schedule.

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: 98 x 120 x 10 mm, or the figures taken from the shaft and housing.
2. Quantity and destination: required pieces, destination country and port.
3. Material: NBR as standard, FKM or HNBR when the duty needs them.
4. Marking and packaging: seal print and carton requirements.
5. Sample or drawing: helpful where the seal is matched from a used part.
6. Working conditions: temperature, oil type and shaft speed, if known.

Frequently Asked Questions

How do I confirm this seal fits my assembly?
Measure the shaft, the housing bore and the depth available to the seal. Values of 98 mm, 120 mm and 10 mm confirm the size, and the lip material then has to suit the oil and temperature in the unit.

What are the exact dimensions of this oil seal?
98 mm inner diameter, 120 mm outer diameter and 10 mm width. These are nominal values, so verify against your own sample or drawing before ordering.

What is the minimum order quantity?
MOQ varies with whether this size is a stock item or a production run. Give us your intended quantity and the quotation will state the MOQ and the price steps above it.

What is the lead time, and can you ship by sea or air?
Standard sizes typically leave within 7 to 15 working days after confirmation. Sea and air freight are both arranged, with freight and transit time confirmed for your destination.

Can you supply FKM or HNBR instead of NBR?
Yes, the geometry can be produced in either. FKM is the choice for continuous duty near +200 C or synthetic fluids, and HNBR where ozone and abrasion are the main threat.

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

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

What information do you need to quote?
Size or a photo of the removed seal, quantity, material, working temperature and fluid, packing and marking requirements, and the destination port.

Request a Quotation

Send the 98 x 120 x 10 size, your quantity, the destination and any marking request, and we return MOQ, lead time, packing and price.

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