140x163x10.5 mm Skeleton Rotary Shaft Oil Seal NBR, Black Lip Seal

Product Overview

A 140 x 163 x 10.5 mm skeleton seal closes a large diameter shaft joint, typically on a hub, axle end or heavy gearbox where lubricant loss would be costly and the housing sees load and vibration.

At a glance:

140x163x10.5 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 body is built on a steel skeleton with the rubber moulded around it, and a garter spring loads the single lip. Large seals distort easily if the frame is weak, so the skeleton matters as much as the compound at this size.

Key Features & Benefits

• Skeleton holds a large diameter: The steel frame keeps a 163 mm outer diameter round, which stops the seal becoming oval as it is driven into the housing.
• Single lip, spring loaded: One well supported sealing edge with a garter spring gives reliable contact without the drag of extra lips.
• Tolerates housing load: On hubs and axle ends the frame resists the side movement that would otherwise lift the lip off the shaft.
• Thin 10.5 mm profile: A shallow section fits housings where the seal sits close to a shoulder or bearing.
• Selected from measurement: Large sizes are usually set by a bore and shaft reading, so this seal can be specified from the housing in front of you.
• Service friendly: No sealant, no heat: clean the bore, lubricate the lip, press in square and check that the face is flush.

Dimensions & Specification

Specification	Value
Inner Diameter (ID)	140 mm
Outer Diameter (OD)	163 mm
Width / Height	10.5 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

Dimensions are nominal and are stated as inner diameter x outer diameter x width. Check them against the removed seal or a measured shaft and housing bore before an order is confirmed.

Material & Construction

The lip is NBR (nitrile butadiene rubber) moulded over a steel skeleton. Nitrile is used here because wheel and axle duty calls for steady resistance to mineral and gear oil rather than for extreme temperature, and it keeps working from -30 C to +100 C with short peaks to +120 C. The garter spring maintains lip load as the running surface polishes. At this diameter the skeleton supplies most of the dimensional stability. Where the unit sees continuous heat or synthetic lubricant, the same 140 x 163 x 10.5 size can be produced in FKM for duty to about +200 C.

Quality Control and Inspection

• Incoming: compound hardness checked before release to production.
• In process: skeleton flatness and roundness, bond integrity, lip geometry and spring seating checked at set intervals.
• Final: inner diameter, outer diameter and width measurement, rubber hardness, lip edge inspection and 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.

Buyers may nominate a third party inspector before shipment; state the requirement in the enquiry so it is built into the quotation and 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: 140 x 163 x 10.5 mm, or the shaft and bore measurements from the unit.
2. Quantity and destination: required quantity, destination country and port.
3. Material: NBR as standard, or FKM and HNBR where the duty requires them.
4. Marking and packaging: print on the seal and carton details.
5. Sample or drawing: send one if the part is matched from service.
6. Working conditions: temperature, lubricant and shaft speed, where known.

Frequently Asked Questions

How do I confirm this seal fits my assembly?
Measure the shaft, the housing bore and the depth left for the seal. Readings of 140 mm, 163 mm and 10.5 mm define the fit, and the lip compound should then be checked against the oil in service.

What are the exact dimensions of this oil seal?
140 mm inner diameter, 163 mm outer diameter and 10.5 mm width. These are nominal, so confirm against your own sample or drawing before releasing an order.

What is the minimum order quantity?
MOQ depends on whether this diameter is held in stock or produced to order. Tell us the quantity you need and the quotation confirms the MOQ with pricing tiers.

What is the lead time, and can you ship by sea or air?
Standard sizes usually ship within 7 to 15 working days of order confirmation. Sea and air shipments are both organised, with freight and transit time confirmed for your destination.

Can you supply FKM or HNBR instead of NBR?
Yes, both compounds can be run in this geometry. FKM covers continuous duty to about +200 C and synthetic fluids, while HNBR is chosen where abrasion and ozone are the main risk.

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

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 seal being replaced, quantity, material, working temperature and fluid, packing and marking needs, and the destination port.

Request a Quotation

Send the 140 x 163 x 10.5 size, quantity, destination and any marking requirement, and we come back with MOQ, lead time, packing and price.

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