Compatibility: Replaces Gecko, Hydro Quip, Aeware, United and most other Flow Thu components, including # 711-4030 4 pcs rubber gaskets for heating elements. Applicable to: Arctic Spa, Self Flowing Spa, Beachcomber Spa, Bullfrog Spa, Volcano Spa, California Spa, Canadian Spa Company, Filber Spa, Coleman Spa, Catalina Spa, Jacuzzi, Hot Spring Spa, Marquis Spa, Sweet Water Spa, Thermopa Spa, Unicel Spa, Viking Spa Vita Spa, Waterway Spa, most spa pumps, spa hot tubs or heating element connections to prevent leakage. Area of use: Mainly used for mounting pipe fittings, pipe connections, pump wet end connections, as well as gaskets between heating elements and pipe connections, to help fix the spa gaskets in place. Size: For a 2\" pipeline (the actual measured value for the gasket is 3 inches). Precautions: Before purchasing, please confirm if the size matches the model. If you have any questions, .hot tub parts, hot tub gasket, hot tub pump o ring, seals for hot tub heaters, heater connection gasket, 2 O-ring gasket Balboa Spa, Balboa gasket. Color: White. Material: Rubber. Package contents: 1x2\" gasket set for spa hot tub heater. Only the above package content, other products are not included. Note: Light reflections and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.