56x72x8 mm Rotary Shaft Oil Seal NBR, Black Lip Seal with Metal Case
Model / SKU: 56-72-8-NBR-VKEFOT
VKEFOT rotary shaft oil seal 56 x 72 x 8 mm, NBR (nitrile butadiene rubber), single lip with garter spring inside a metal case. For engine rebuilders, auto parts wholesalers and MRO repair shops; Lead Time: 7 to 15 days. Submit your RFQ with size, OE number and destination.
Tags: 56x72x8 oil seal, rotary shaft oil seal, NBR shaft seal, metal case oil seal, VKEFOT oil seal
Product photos
Key specs: Size (mm): 56x72x8 | Material: NBR | Inner Diameter (ID): 56 mm | Outer Diameter (OD): 72 mm | Width / Height: 8 mm | Material: NBR (nitrile butadiene rubber) | Colour: Black | Structure: Single lip, garter spring, metal-cased body
- Size (mm): 56x72x8
- Material: NBR
- Inner Diameter (ID): 56 mm
- Outer Diameter (OD): 72 mm
- Width / Height: 8 mm
- Material: NBR (nitrile butadiene rubber)
- Colour: Black
- Structure: Single lip, garter spring, metal-cased body
- Seal Type: Rotary shaft oil seal
- Marking: VKEFOT
- Continuous Service Temperature: -30 C to +100 C (short peaks to +120 C)
- Brand: VKEFOT
Technical summary
Product specifications. Refer to the approved drawing for dimensional tolerances and installation requirements.
| Spec | Value |
|---|---|
| Size (mm) | 56x72x8 |
| Material | NBR |
| Inner Diameter (ID) | 56 mm |
| Outer Diameter (OD) | 72 mm |
| Width / Height | 8 mm |
| Material | NBR (nitrile butadiene rubber) |
| Colour | Black |
| Structure | Single lip, garter spring, metal-cased 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 |
Pricing: request a quote (B2B / wholesale).
Product details
Product Overview
Where a 56 mm shaft passes through a 72 mm bore, this seal provides the oil tight joint. It holds lubricant on the working side, blocks dust and water entering from outside, and takes the small run out that any repaired shaft carries.
At a glance:
56x72x8 mm | NBR (nitrile butadiene rubber) | single lip, garter spring, metal-cased body | made in Xingtai, Hebei, China | working range -30 C to +100 C (short peaks to +120 C)
The seal is moulded in black NBR over a steel case and is meant to be pressed into the housing until its face is flush. Selection is by measurement, which keeps spares planning simple for workshops that already have the shaft and bore figures on file.
Key Features & Benefits
- Oil and grease containment: The spring loaded lip keeps lubricant on the working side under normal shaft speeds and oil temperatures.
- Contamination barrier: Water, dust and mud are held at the outside face, which protects the bearing and extends service intervals.
- Case for a reliable press fit: A steel case gives the outer diameter the stiffness needed to stay square and sealed in the bore.
- Steady radial force: The garter spring compensates for lip bedding in and light shaft wear, so leak free running is not limited to new shafts.
- Slim 8 mm body: Useful where housing depth behind the bearing shoulder is limited.
- Easy to fit in volume: One straight press operation per unit, so a rebuild line can fit seals at a consistent rate.
Dimensions & Specification
| Specification | Value |
|---|---|
| Inner Diameter (ID) | 56 mm |
| Outer Diameter (OD) | 72 mm |
| Width / Height | 8 mm |
| Material | NBR (nitrile butadiene rubber) |
| Colour | Black |
| Structure | Single lip, garter spring, metal-cased 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 |
Figures are nominal and are listed as inner diameter x outer diameter x width. Check them against the seal in your hand or against the measured shaft and bore before committing to an order.
Material & Construction
NBR (nitrile butadiene rubber) is the standard lip compound here, and it suits mineral oil, grease and most gear oils. It works from -30 C to +100 C, with short peaks to +120 C, and retains elasticity well enough to track a shaft that is not perfectly round. The compound is bonded to a steel case and the lip is loaded by a garter spring. If the application runs hot, or uses a synthetic or high additive fluid, the identical 56 x 72 x 8 size is offered in FKM, which takes continuous duty to about +200 C.
Quality Control and Inspection
- Incoming: compound hardness checked before release to production.
- In process: case concentricity, lip moulding and edge finish, spring seating and outer diameter roundness checked at set intervals.
- Final: inner diameter, outer diameter and width measurement, hardness, visual check on lip and marking, then packing count verification.
- Traceability: inspection results for each batch are recorded and kept; the inspection scope can be agreed before order confirmation.
Inspections arranged by the buyer before dispatch are accepted; name the requirement in the enquiry so it is included in the quote.
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:
- Size: 56 x 72 x 8 mm, or a photo showing the measurement on the old seal.
- Quantity and destination: required pieces, destination country and port.
- Material: NBR by default, or FKM and HNBR when the duty calls for them.
- Marking and packaging: details to print and carton instructions.
- Sample or drawing: send one where dimensions come from a used part.
- Working conditions: lubricant, temperature and speed range.
Frequently Asked Questions
How do I confirm this seal fits my assembly?
Measure the shaft, the bore and the free depth. When those read 56 mm, 72 mm and 8 mm the size matches, and the lip material should then be checked against the fluid and temperature.
What are the exact dimensions of this oil seal?
56 mm inside diameter, 72 mm outside diameter and 8 mm width. Always confirm these nominal values against the part being replaced, since housing shoulders vary.
What is the minimum order quantity?
MOQ depends on whether the size is stocked or produced for you. Give us the quantity you expect to run and the quotation will show the MOQ plus price breaks.
What is the lead time, and can you ship by sea or air?
Common sizes leave within 7 to 15 working days of confirmation. Sea and air freight are both arranged, and cost and transit time are confirmed against your destination.
Can you supply FKM or HNBR instead of NBR?
Yes, this geometry is available in both. Choose FKM for continuous heat near +200 C or synthetic lubricants, and HNBR where ozone or abrasion is the stronger concern.
Do you provide samples, and are they free?
Samples for evaluation can be arranged. The sample and its freight are quoted per request, and on a 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 the old part for reference, quantity, material, working temperature and fluid, marking and packing requirements, and the destination port.
Request a Quotation
Send the 56 x 72 x 8 size, your quantity, your 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.