35x50x10 mm Rotary Shaft Oil Seal NBR, Metal-Cased Single Lip Seal

Product Overview

A 35 x 50 x 10 mm rotary shaft oil seal presses into a housing and runs on a rotating shaft, holding oil or grease in and keeping dust and water out. This one has a metal case, a nitrile sealing lip loaded by a garter spring, and a 10 mm body.

At a glance:

35x50x10 mm | NBR (nitrile butadiene rubber) | single lip with garter spring, metal-cased outer diameter | 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 wholesalers and repair workshops that order by dimension. The shaft diameter, housing bore and available width decide whether it will seat correctly.

Key Features & Benefits

• Metal case for a firm press fit: The steel outer shell holds its diameter in the bore, so the seal stays square under load and vibration instead of working loose.
• Nitrile lip: NBR resists mineral oil, gear oil and grease and stays flexible down to about -30 C, which covers most gearbox and pump duty.
• Spring-supported contact: A garter spring keeps the lip pressed to the shaft as it wears, so sealing force does not drop away after a few thousand hours.
• 10 mm body: The 10 mm width suits housings with a standard counterbore and gives more lip length on the shaft than a thin seal.
• Fits by dimension: Selection is by shaft diameter, bore and width, so a stocked size is matched to a worn original from stock.
• Simple to fit: Press it in square with a greased lip; no special fitting aids are needed, which suits workshop conditions.

Dimensions & Specification

Specification	Value
Inner Diameter (ID)	35 mm
Outer Diameter (OD)	50 mm
Width / Height	10 mm
Material	NBR (nitrile butadiene rubber)
Colour	Brown
Structure	Single lip, garter spring, metal-cased outer diameter
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 production values measured as inner diameter x outer diameter x width. Confirm them against your own sample or a measured shaft and housing bore before releasing an order.

Material & Construction

The sealing lip is NBR (nitrile butadiene rubber) bonded to a metal case. NBR handles mineral oil, gear oil and grease over -30 C to +100 C (short peaks to +120 C) and tolerates a shaft that is slightly out of round. The case holds the rubber and the lip is loaded by a garter spring. If the housing runs hot or the oil is a synthetic or heavily additised type, the same profile can be supplied 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 and the rubber-to-case bond checked at set intervals.
• Final: dimensional check on inner diameter, outer diameter and 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.

Third-party inspection before shipment can be arranged on request; state it in the enquiry so it is priced 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: 35 x 50 x 10 mm, or the number stamped on your current seal.
2. Quantity and destination: required quantity, destination country and port.
3. Material requirement: NBR as standard, or FKM for higher temperature or synthetic fluid.
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: fluid type, temperature and shaft speed, if known.

Frequently Asked Questions

How do I confirm this seal fits my assembly?
Compare the 35 mm shaft, the 50 mm bore and the 10 mm housing depth with the seal you are removing, and check that the metal case outside diameter matches the bore. The lip can then be checked against the shaft surface.

What are the exact dimensions of this oil seal?
35 mm inner diameter, 50 mm outer diameter and 10 mm width. Confirm against your own sample or drawing, since shoulder position and bore depth vary between housings.

What is the minimum order quantity?
MOQ is set by whether 35x50x10 is stocked or produced to order. Send the quantity you need and we will confirm MOQ and stepped pricing in the quotation.

What is the lead time, and can you ship by sea or air?
Standard sizes are normally ready in 7 to 15 working days after the order is confirmed. Sea and air options are both arranged, with cost and transit time quoted per destination.

Can you supply FKM or HNBR instead of NBR?
Yes. The same profile can be made in FKM (fluoroelastomer) or HNBR for higher temperature or synthetic and additised oil. Confirm the compound at enquiry stage.

Do you provide samples, and are they free?
Evaluation samples can be supplied. The sample and its freight are quoted per request; on a confirmed bulk order the sample charge is usually set off against the order.

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

What information do you need to quote?
The size or the number on the old seal, quantity, material, working temperature and fluid, packaging and marking requirement, destination port and preferred Incoterm. A drawing or sample gives the most accurate result.

Request a Quotation

Send the 35 x 50 x 10 mm size (or the number on the seal you are replacing), quantity, destination and any branding requirement, and we will answer with MOQ, lead time, packing details and pricing.

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