Description: The Viton 075037-V is a brown 3/8" O-ring designed for hot water pressure washers. The O-ring ensures a tight seal around coupled quick-connect joints through which water passes like hoses, nozzles, and wands. While these O-rings are made of long-lasting EPDM rubber, they are important to replace to prevent leaks over time. It's a good idea to keep several of these on hand in your on-site pressure washing supplies, or on your trailer-mounted pressure washing rig. Material: EPDM Rubber. Size: 3/8".