80x135/142x12.5/20 mm Differential Oil Seal 2402N-058-A NBR, Flanged Rotary Shaft Seal

Product Overview

An 80 x 135 / 142 x 12.5 / 20 mm differential oil seal fits the main reduction position of a truck axle, holding gear oil in the differential and keeping road dirt out. This one is a flanged stepped design: the 135 mm body presses into the bore, the 142 mm flange lands on the housing face, and the 12.5 mm lip section sits inside a 20 mm overall body. The lip is nitrile and is loaded by a garter spring.

At a glance:

80x135/142x12.5/20 mm | NBR (nitrile butadiene rubber) | single lip with garter spring, flanged metal-cased stepped 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 fleets and axle workshops that buy by dimension. Measure the 80 mm shaft, the 135 mm bore, the 142 mm flange register and the 20 mm overall depth against your own unit before ordering.

Key Features & Benefits

• Flanged location: The 142 mm outer flange seats against the housing face, so the seal sets at a fixed depth and does not drift deeper into the bore under load.
• Two outer diameters: The 135 mm body is the press fit and the 142 mm outer is the flange; both have to match, since one seals the bore and the other locates the seal.
• Nitrile lip for gear oil: NBR resists the EP gear oil used in truck differentials and stays flexible down to about -30 C.
• Spring-loaded contact: A garter spring keeps the lip pressed to the pinion shaft so sealing force holds up as the lip wears.
• Built for axle duty: The heavy body and case suit the load and shaft runout at a main reduction position, where a thin general-purpose seal would soon weep.
• Matched by measurement: Shaft diameter, bore, flange register and depth set the fit, so a stocked size can replace a worn seal from stock.

Dimensions & Specification

Specification	Value
Inner Diameter (ID)	80 mm
Outer Diameter (OD)	135 mm / 142 mm
Width / Height	12.5 mm / 20 mm
Flange Diameter	142 mm
Overall Width	20 mm
Material	NBR (nitrile butadiene rubber)
Colour	Black
Structure	Single lip, garter spring, flanged metal-cased stepped body (the second outer diameter is the flange, the second width value is the overall width)
Seal Type	Differential oil seal
OEM Reference	2402N-058-A
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 measured as inner diameter x outer diameter x width; the 135 mm / 142 mm values are the press fit and the flange, and the 12.5 mm / 20 mm values are the lip section and the overall body width. Confirm them against your own sample before ordering.

Material & Construction

The lip is NBR (nitrile butadiene rubber), the standard lip material for gear oil in axle service, bonded to a metal case that forms the stepped and flanged body. NBR covers -30 C to +100 C (short peaks to +120 C) and tolerates a shaft that is slightly out of round. The lip is backed by a garter spring. Where axle temperature runs higher, or the oil is a synthetic type, the same flanged geometry can be quoted in FKM (fluoroelastomer), good for continuous duty to about +200 C.

Quality Control and Inspection

• Incoming: compound hardness checked before release to production.
• In process: case concentricity, lip geometry, spring seating, flange flatness and step height checked at set intervals.
• Final: dimensional check on inner diameter, body outer diameter, flange diameter, lip section and overall width, hardness, visual inspection of the lip edge 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.

Buyers can arrange third-party inspection before shipment; state the requirement in the enquiry so it can be built 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: 80 x 135 / 142 x 12.5 / 20 mm, or the 2402N-058-A number from your parts book.
2. Quantity and destination: required quantity, destination country and port.
3. Material requirement: NBR as standard, or FKM for higher axle temperature or synthetic gear oil.
4. Packaging requirement: carton marks, label data and barcode requirement.
5. Sample photo or drawing: where the part is matched from a worn original.
6. Operating conditions: oil type, working temperature and shaft speed, if known.

Frequently Asked Questions

How do I confirm this seal fits my assembly?
Check the 80 mm pinion shaft, the 135 mm bore, the 142 mm flange register and the 20 mm housing depth against the seal being replaced. With a flanged design all four have to match, not just the shaft and bore.

What are the exact dimensions of this oil seal?
80 mm inner diameter, a 135 mm press-fit outer diameter, a 142 mm flange, a 12.5 mm lip section and a 20 mm overall body width. Confirm against your own sample, because the flange and overall width set the seating position.

What is the minimum order quantity?
MOQ depends on whether this size is held in stock or produced to order. Send 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. Both sea and air freight can be arranged, with transit time and cost confirmed per destination.

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

Do you provide samples, and are they free?
Samples for evaluation can be arranged. Sample cost and freight are quoted per request, and 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 OE number you are replacing, quantity, material, oil type and working temperature, packaging and marking requirement, destination port and preferred Incoterm. A drawing or a sample gives the most accurate result.

Request a Quotation

Send the 80 x 135 / 142 x 12.5 / 20 mm size (or the OE number you are replacing), quantity, destination and any branding requirement, and we will reply with MOQ, lead time, packing details and pricing.

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