Whether you are sourcing crankshaft, differential, axle shaft or transmission oil seals for the first time or looking to consolidate your supplier base, the questions below cover the key compatibility, sizing and documentation topics that matter most during procurement. All answers are based on product information published by Xingtai Huimao Trading Co.,Ltd.

Explore the full range of available options on the Premium Oil Seals product page.

1. What types of automotive oil seals are available?

The product range includes seals for multiple positions within a vehicle drivetrain and engine:

• Crankshaft oil seals – front and rear positions
• Differential oil seals
• Transmission oil seals
• Axle shaft oil seals
• Camshaft oil seals
• Oil pump oil seals
• Transfer case oil seals
• Knuckle oil seals
• Wheel oil seals

Each type is catalogued with its OEM part number, making cross-referencing straightforward.

2. What rubber materials are used in these oil seals?

Product listings confirm that oil seals are available in NBR, ACM and FKM rubber compounds, depending on the part number. Material selection affects heat resistance, chemical compatibility and service life, so buyers should confirm the required compound when placing an enquiry.

3. How do I identify the correct oil seal using an OEM part number?

Each oil seal in the catalogue is listed with its OEM part number (e.g., 90311-88003 for a crankshaft seal, 91206-PC8-005 for an axle shaft seal). To find the correct seal, provide the OEM number, vehicle model and application position. Cross-reference tables are available, and the team can verify fitment from a part number or from a sample.

4. How are oil seal dimensions specified?

Published product records include the three-digit dimensional format: inner diameter × outer diameter × width (all in millimetres). For example:

When placing an enquiry, supplying all three dimensions alongside the OEM number helps avoid substitution errors, especially for seals where multiple variants share a similar part number prefix.

5. Can I order a custom or OEM-specified oil seal if my part number is not in the catalogue?

Yes. OEM/ODM processing is listed as a standard service. Buyers can submit a design drawing, a physical sample or detailed technical requirements. A complete set of design schemes for rubber seals and parts can be developed to meet customer specifications. Contact the sales team with the part number, machine model, required quantity and dimensions to receive a price quotation.

6. What is the minimum order quantity (MOQ)?

The published minimum order quantity is 100 pieces per part number. Sample orders are also available—confirm sample lead times and any associated charges directly with the sales team.

7. What packaging options are offered?

Three standard packaging formats are available:

1. Standard box
2. Neutral box
3. Customer's required box

Customers can specify their preferred packaging when placing an order.

8. What are the lead times and shipping methods?

Documented lead times are 5–7 days for in-stock items and up to 30 days for out-of-stock or custom items. Shipment is available by sea, air or express carrier. Available departure ports include Guangzhou, Shenzhen, Zhuhai, Xiamen, Yiwu, Shanghai, Ningbo, Qingdao, Yantai and others in China.

9. What payment terms are accepted?

Accepted payment methods listed in product documentation include T/T, L/C, D/A, D/P, PayPal and Western Union.

10. How can I verify compatibility before placing a bulk order?

Sample orders are explicitly noted as available. Submitting the OEM part number, vehicle model, application position and dimensional data (inner diameter × outer diameter × width) before committing to a full order is the recommended approach. The team can also work from a physical sample to confirm the correct specification.

For enquiries on specific part numbers, material grades or custom designs, contact Xingtai Huimao Trading Co.,Ltd directly through the website.