42x70x10 mm Rotary Shaft Oil Seal NBR, Black TC Type Shaft Seal

Product Overview

With a 42 mm shaft and a 70 mm bore, this seal has a wide radial band and a 10 mm section, so it presses into the housing over a generous contact area. The wider band tolerates a bore that is not perfectly round, which is normal on cast and welded housings.

At a glance:

42x70x10 mm | NBR (nitrile butadiene rubber) | double lip metal-cased TC with garter spring and ribbed outer diameter | made in Xingtai, Hebei, China | working range -30 C to +100 C (short peaks to +120 C)

Seals of this proportion are used on gearcase covers, transmission ends and axle housings, where vibration and side load are part of normal operation. The metal case plus the ribbed outer diameter keep the part located, and the spring-loaded lip follows the shaft.

Key Features & Benefits

• Wide radial band: The 14 mm difference between shaft and bore gives the outer band a large grip area, so the seal stays located even when the housing vibrates.
• Ribbed outer diameter: The moulded ribs compress against the bore and resist rotation, which is the failure mode that shows up first on a loose fitting seal.
• Double lip layout: A main lip seals the lubricant and a dust lip takes the dirt, protecting the shaft finish that the main lip depends on.
• Case resists cocking: The metal case keeps the body square during pressing, so the lip runs true to the shaft axis instead of bearing on one side.
• Spring maintains load: The garter spring keeps pressure on the shaft as surfaces bed in, so the seal holds through long service intervals between rebuilds.
• Sized by shaft and bore: 42 mm shaft and 70 mm bore identifies the part without needing any catalogue reference.

Dimensions & Specification

Specification	Value
Inner Diameter (ID)	42 mm
Outer Diameter (OD)	70 mm
Width / Height	10 mm
Material	NBR (nitrile butadiene rubber)
Colour	Black
Structure	Double lip with garter spring, metal-cased body, ribbed outer diameter
Seal Type	Rotary shaft oil seal
Marking	TC 42 70 10
Continuous Service Temperature	-30 C to +100 C (short peaks to +120 C)
Brand	VKEFOT
Origin	Xingtai, Hebei, China

Nominal figures: 42 mm inner diameter, 70 mm outer diameter, 10 mm width. Where the housing has been in service for a long time, measure the bore as well as the shaft, because both wear.

Material & Construction

NBR (nitrile butadiene rubber) is used for the lip because it keeps sealing force in mineral oil, gear oil and grease and stays flexible over -30 C to +100 C (short peaks to +120 C). The body is carried on a metal case with a ribbed rubber outside diameter, and a garter spring supplies the closing load. For applications with sustained higher temperature or a synthetic lubricant, the same 42 x 70 x 10 size can be produced in FKM, which works continuously to about +200 C.

Quality Control and Inspection

• Incoming: compound hardness checked before release to production.
• In process: case concentricity, lip radius, garter spring seating and rib depth on the outer diameter checked at set intervals.
• Final: dimensional check on 42 mm inner diameter, 70 mm outer diameter and 10 mm width, rubber hardness, lip edge, rib pattern 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.

Measured values are recorded against the batch and travel with the shipment, so any question on a delivered carton can be answered from the production data. Inspection by a nominated third party can be arranged before loading when it is requested in the enquiry.

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.

In stock: ships in 1 to 2 days. Not in stock but still in current production: 10 to 15 days. Not in stock and not in production: 25 to 30 days. 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: 42 x 70 x 10 mm, or the measurements from the part being replaced.
2. Quantity and destination: quantity, destination country and port of discharge.
3. Material: NBR standard, with FKM or HNBR available for other duties.
4. Marking and packaging: marking, carton labels and barcode data.
5. Drawing or sample: recommended if the housing bore has run for a long period.
6. Working conditions: fluid, temperature, shaft speed and vibration level, if known.

Frequently Asked Questions

How do I confirm this seal fits my assembly?
Check the shaft at 42 mm, the bore at 70 mm and the depth available for the 10 mm section, then compare the lip arrangement with the part removed from the housing. All three values decide the fit.

What are the exact dimensions of this oil seal?
42 mm inner diameter, 70 mm outer diameter and 10 mm width. If the housing has been running a long time, measure the bore too, since a worn bore reduces the grip of the outer band.

What is the minimum order quantity?
It varies with whether 42x70x10 is a stock size or produced for the order. Tell us your quantity and the MOQ is confirmed along with the price.

What is the lead time, and can you ship by sea or air?
In stock: ships in 1 to 2 days. Not in stock but still in current production: 10 to 15 days. Not in stock and not in production: 25 to 30 days. Sea and air freight are both arranged, quoted by destination.

Can you supply FKM or HNBR instead of NBR?
Yes. This 42 x 70 x 10 size can be supplied in FKM or HNBR where temperature or fluid conditions exceed the NBR range. Confirm the compound when enquiring.

Do you provide samples, and are they free?
Samples can be provided for trial fitting. The sample and its freight are quoted per request, and on a confirmed bulk order the sample charge is normally deducted from 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 42 x 70 x 10 mm, quantity, destination port, material, temperature, fluid, packaging requirement and preferred Incoterm.

Request a Quotation

Send the size 42 x 70 x 10 mm or the measurements of the part being replaced, with quantity, destination and any branding requirement, and MOQ, lead time, packing and price will follow.

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