ASA’s reputation for excellence has been built on our ability to provide our valued customers with the most effective manufacturing solutions to meet their most demanding applications. Our main objective is to continuously exceed our customers’ expectations by providing them with high-performance gaskets and sealing products, competitive pricing, on-time delivery and exceptional customer service. We are committed to consistently meet all of your blueprint specifications and tolerance requirements.

In terms of quality certification, ASA has obtained ISO 500001, ISO 14001, and IATF 16949 certifications to provide customers with high-quality and guaranteed oil seal products. Accept OEM, customized order research and development, and take your standards as our manufacturing goal. Our processes include rubber feeding, iron shell feeding, primming, rubber cutting, vulcanization, refurbishment, secondary vulcanization, finished product inspection, and finally packaging and shipment. Based on our many years of manufacturing experiences, we stand as a professional universal oil seals and custom oil seals manufacturer that has maintained long-term cooperation with many manufacturers.

Application : power steering, Snow scraper / machine, hydraulic column, Pistons, steering

Function/Feature : rotary and reciprocating sealing design, scrape frost, ice, sludge, asphalt, snow, salt water, thick media, etc, sealing, prevent leakage of hydraulic oil

ASA Custom Oil Seals

An oil seal generally consists of an outer circular metal part and an inner flexible member that does the actual sealing and is bonded to the metal part by chemical adhesive agents. A fine sealing edge provides adequate pressure on the shaft to prevent leakage.

ASA custom oil seal customized orders are accepted. Our machining size range is 12 mm~400mm in outer diameter, and the tolerance range of imperial units’ oil seals is ±0.015inch; the tolerance range of metric units’ oil seals can reach ±0.3mm. Machinable materials are NBR, HNBR, ACM, FKM, EPDM, PTFE, CR, SE, VMQ, SBR, PU, XNBR, AEM. We take your requirements as the standard.


ASA OIL SEALS CO., LTD. is a leading supplier of high-quality and high-performance universal and custom oil seals. Currently, our most exporting countries are European countries, the United States, France, Germany, India, Vietnam, China, South Korea, Brazil, Pakistan, Indonesia, Australia, Finland, etc.

ASA manufactures oil seal products of corresponding sizes in metric and imperial systems, and provides standard and universal oil seal products. If you have special specifications and style requirements, you can further contact us.