RevHD, LLC was established by former seal manufacturing employees who partnered to develop a better seal, with a better warra ... nty, at a better price. We utilized 75+ years of wheel end sealing technology experience to make the Rev 1 and Rev Max seals. We are a family-owned company. We are committed to an “old-school” philosophy of customer service and customer loyalty. We stand behind our seals completely, and we offer a no-questions-asked warranty. We will warranty our seal no matter the cause of failure – even technician error. read more