FKM Repair Kit For These Valves: SQE1 & SQE2 Next Day Fittings is an authorized Humphrey Distributor. If you have any questions about the Humphrey SRKSQEVAI Air Valve Repair Kits's technical information or availability please call us at: 844-323-8752Next Day Fittings is an official Humphrey distributor, we can offer our customers the best pricing and factory lead times. Our trained and knowledgeable staff is always ready to help with any aspect of the Humphrey product purchasing process. Whether you need assistance from a customer service agent or a product engineering expert, Next Day Fittings is your Humphrey partner every step of the way.