The Raypak drain plug is designed for compatible 185, R185A, and R185B heater applications where the supported drain-point closure component needs replacement. A drain plug is useful because it helps maintain a dependable seal at the drainage point while still allowing the system to be opened when service or draining is needed.This replacement is especially useful when the original plug is stripped, cracked, corroded, or no longer sealing properly. Matching the correct heater series helps preserve fit and reduce unnecessary installation issues.The 006721F is a practical service part when a compatible Raypak heater needs a drain plug to restore dependable closure and serviceability. Raypak drain plug Designed for compatible 185, R185A, and R185B models Helps restore dependable drain-point sealing Useful when the original plug is damaged or leaking Supports cleaner and more reliable heater service
