Custom and Standard Seals, Products and Solutions Our knowledgeable team at Hercules OEM provides engineering design solutions for a diverse group of markets and applications. HOEM can customize any seal or product precisely to meet your specifications. Our competitive advantage is anchored in a broad product base, unbeatable product knowledge, progressive engineering skills, extensive logistics and distribution capability. HOEM is a world leader in the supply of o-rings, hydraulic seals, precision metal products, custom machined plastics, custom molded rubber and related products. We have established a strong reputation by supplying our customers with quality products, great customer service, and professional engineering assistance. We are dedicated to supplying a consistently high-quality product. Our Quality Management System (QMS) has been found to be compliant to ISO9001:2015 standard by SAI Global, and we have a comprehensive quality laboratory, as well as a Certified Quality Engineer on staff. We work with extensive and diverse markets and we are experienced in a multitude of the compliance programs that today's manufacturers require. We stock a full line of standard, metric and custom size o-rings in multiple materials. With 5 different warehouses located throughout the nation, we have ample space for a substantial inventory of o-rings and seals. When you have questions, we have answers.